Home / 65,870,822.51-90,871,927.13-39,756,992.75

Finding the Fourth Proportional to 65,870,822.51, 90,871,927.13 and 39,756,992.75

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Solution

The fourth proportional to 65,870,822.51, 90,871,927.13 and 39,756,992.75 is: 54,846,659.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,870,822.51 : 90,871,927.13 = 39,756,992.75 : x
  2. Step 2: Convert to fraction form
    65,870,822.51/90,871,927.13 = 39,756,992.75/x
  3. Step 3: Cross multiply
    65,870,822.51x = 90,871,927.13 × 39,756,992.75
  4. Step 4: Simplify right side
    65,870,822.51x = 3,612,794,548,114,333
  5. Step 5: Solve for x
    x = 3,612,794,548,114,333/65,870,822.51
  6. Step 6: Final answer
    x = 54,846,659.12

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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.