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Finding the Fourth Proportional to 87,712, 131,574.52 and 28,543.12

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Solution

The fourth proportional to 87,712, 131,574.52 and 28,543.12 is: 42,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,712 : 131,574.52 = 28,543.12 : x
  2. Step 2: Convert to fraction form
    87,712/131,574.52 = 28,543.12/x
  3. Step 3: Cross multiply
    87,712x = 131,574.52 × 28,543.12
  4. Step 4: Simplify right side
    87,712x = 3,755,547,313.30
  5. Step 5: Solve for x
    x = 3,755,547,313.30/87,712
  6. Step 6: Final answer
    x = 42,816.80

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