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Finding the Fourth Proportional to 71,733.28, 107,507.28 and 59,812.90

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Solution

The fourth proportional to 71,733.28, 107,507.28 and 59,812.90 is: 89,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,733.28 : 107,507.28 = 59,812.90 : x
  2. Step 2: Convert to fraction form
    71,733.28/107,507.28 = 59,812.90/x
  3. Step 3: Cross multiply
    71,733.28x = 107,507.28 × 59,812.90
  4. Step 4: Simplify right side
    71,733.28x = 6,430,322,187.91
  5. Step 5: Solve for x
    x = 6,430,322,187.91/71,733.28
  6. Step 6: Final answer
    x = 89,642.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.