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Finding the Fourth Proportional to 72,565.28, 108,847.38 and 39,495.56

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Solution

The fourth proportional to 72,565.28, 108,847.38 and 39,495.56 is: 59,243.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,565.28 : 108,847.38 = 39,495.56 : x
  2. Step 2: Convert to fraction form
    72,565.28/108,847.38 = 39,495.56/x
  3. Step 3: Cross multiply
    72,565.28x = 108,847.38 × 39,495.56
  4. Step 4: Simplify right side
    72,565.28x = 4,298,988,227.63
  5. Step 5: Solve for x
    x = 4,298,988,227.63/72,565.28
  6. Step 6: Final answer
    x = 59,243.05

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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.