Home / 87,705.20-131,559-28,541.18

Finding the Fourth Proportional to 87,705.20, 131,559 and 28,541.18

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Solution

The fourth proportional to 87,705.20, 131,559 and 28,541.18 is: 42,812.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,705.20 : 131,559 = 28,541.18 : x
  2. Step 2: Convert to fraction form
    87,705.20/131,559 = 28,541.18/x
  3. Step 3: Cross multiply
    87,705.20x = 131,559 × 28,541.18
  4. Step 4: Simplify right side
    87,705.20x = 3,754,849,099.62
  5. Step 5: Solve for x
    x = 3,754,849,099.62/87,705.20
  6. Step 6: Final answer
    x = 42,812.16

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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.