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Finding the Fourth Proportional to 87,331.60, 130,851.60 and 74,792.80

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Solution

The fourth proportional to 87,331.60, 130,851.60 and 74,792.80 is: 112,064.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,331.60 : 130,851.60 = 74,792.80 : x
  2. Step 2: Convert to fraction form
    87,331.60/130,851.60 = 74,792.80/x
  3. Step 3: Cross multiply
    87,331.60x = 130,851.60 × 74,792.80
  4. Step 4: Simplify right side
    87,331.60x = 9,786,757,548.48
  5. Step 5: Solve for x
    x = 9,786,757,548.48/87,331.60
  6. Step 6: Final answer
    x = 112,064.33

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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.