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Finding the Fourth Proportional to 40,422.55, 55,768.03 and 40,360.25

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Solution

The fourth proportional to 40,422.55, 55,768.03 and 40,360.25 is: 55,682.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,422.55 : 55,768.03 = 40,360.25 : x
  2. Step 2: Convert to fraction form
    40,422.55/55,768.03 = 40,360.25/x
  3. Step 3: Cross multiply
    40,422.55x = 55,768.03 × 40,360.25
  4. Step 4: Simplify right side
    40,422.55x = 2,250,811,253.07
  5. Step 5: Solve for x
    x = 2,250,811,253.07/40,422.55
  6. Step 6: Final answer
    x = 55,682.07

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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.