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Finding the Fourth Proportional to 87,136.92, 130,722.40 and 27,968.04

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Solution

The fourth proportional to 87,136.92, 130,722.40 and 27,968.04 is: 41,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,136.92 : 130,722.40 = 27,968.04 : x
  2. Step 2: Convert to fraction form
    87,136.92/130,722.40 = 27,968.04/x
  3. Step 3: Cross multiply
    87,136.92x = 130,722.40 × 27,968.04
  4. Step 4: Simplify right side
    87,136.92x = 3,656,049,312.10
  5. Step 5: Solve for x
    x = 3,656,049,312.10/87,136.92
  6. Step 6: Final answer
    x = 41,957.52

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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.