Home / 87,417.60-131,126.40-40,761.60

Finding the Fourth Proportional to 87,417.60, 131,126.40 and 40,761.60

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Solution

The fourth proportional to 87,417.60, 131,126.40 and 40,761.60 is: 61,142.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,417.60 : 131,126.40 = 40,761.60 : x
  2. Step 2: Convert to fraction form
    87,417.60/131,126.40 = 40,761.60/x
  3. Step 3: Cross multiply
    87,417.60x = 131,126.40 × 40,761.60
  4. Step 4: Simplify right side
    87,417.60x = 5,344,921,866.24
  5. Step 5: Solve for x
    x = 5,344,921,866.24/87,417.60
  6. Step 6: Final answer
    x = 61,142.40

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1.5x scale

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.