Home / 87,008.40-130,512.60-31,597.20

Finding the Fourth Proportional to 87,008.40, 130,512.60 and 31,597.20

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Solution

The fourth proportional to 87,008.40, 130,512.60 and 31,597.20 is: 47,395.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,008.40 : 130,512.60 = 31,597.20 : x
  2. Step 2: Convert to fraction form
    87,008.40/130,512.60 = 31,597.20/x
  3. Step 3: Cross multiply
    87,008.40x = 130,512.60 × 31,597.20
  4. Step 4: Simplify right side
    87,008.40x = 4,123,832,724.72
  5. Step 5: Solve for x
    x = 4,123,832,724.72/87,008.40
  6. Step 6: Final answer
    x = 47,395.80

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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.