Home / 87,412.40-131,118.60-59,418.80

Finding the Fourth Proportional to 87,412.40, 131,118.60 and 59,418.80

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Solution

The fourth proportional to 87,412.40, 131,118.60 and 59,418.80 is: 89,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,412.40 : 131,118.60 = 59,418.80 : x
  2. Step 2: Convert to fraction form
    87,412.40/131,118.60 = 59,418.80/x
  3. Step 3: Cross multiply
    87,412.40x = 131,118.60 × 59,418.80
  4. Step 4: Simplify right side
    87,412.40x = 7,790,909,869.68
  5. Step 5: Solve for x
    x = 7,790,909,869.68/87,412.40
  6. Step 6: Final answer
    x = 89,128.20

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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.