Home / 39,840,265,510.72-54,979,432,926.21-21,775,771,259.11

Finding the Fourth Proportional to 39,840,265,510.72, 54,979,432,926.21 and 21,775,771,259.11

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Solution

The fourth proportional to 39,840,265,510.72, 54,979,432,926.21 and 21,775,771,259.11 is: 30,050,491,381.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,840,265,510.72 : 54,979,432,926.21 = 21,775,771,259.11 : x
  2. Step 2: Convert to fraction form
    39,840,265,510.72/54,979,432,926.21 = 21,775,771,259.11/x
  3. Step 3: Cross multiply
    39,840,265,510.72x = 54,979,432,926.21 × 21,775,771,259.11
  4. Step 4: Simplify right side
    39,840,265,510.72x = 1,197,219,555,356,871,753,728
  5. Step 5: Solve for x
    x = 1,197,219,555,356,871,753,728/39,840,265,510.72
  6. Step 6: Final answer
    x = 30,050,491,381.26

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.