Home / 87,740.40-131,459.40-40,897.20

Finding the Fourth Proportional to 87,740.40, 131,459.40 and 40,897.20

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Solution

The fourth proportional to 87,740.40, 131,459.40 and 40,897.20 is: 61,275.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,740.40 : 131,459.40 = 40,897.20 : x
  2. Step 2: Convert to fraction form
    87,740.40/131,459.40 = 40,897.20/x
  3. Step 3: Cross multiply
    87,740.40x = 131,459.40 × 40,897.20
  4. Step 4: Simplify right side
    87,740.40x = 5,376,321,373.68
  5. Step 5: Solve for x
    x = 5,376,321,373.68/87,740.40
  6. Step 6: Final answer
    x = 61,275.32

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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.