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Finding the Fourth Proportional to 87,034, 130,532.70 and 42,616

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Solution

The fourth proportional to 87,034, 130,532.70 and 42,616 is: 63,915.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,034 : 130,532.70 = 42,616 : x
  2. Step 2: Convert to fraction form
    87,034/130,532.70 = 42,616/x
  3. Step 3: Cross multiply
    87,034x = 130,532.70 × 42,616
  4. Step 4: Simplify right side
    87,034x = 5,562,781,543.20
  5. Step 5: Solve for x
    x = 5,562,781,543.20/87,034
  6. Step 6: Final answer
    x = 63,915.04

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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.