Home / 87,084.90-130,685.52-31,680.90

Finding the Fourth Proportional to 87,084.90, 130,685.52 and 31,680.90

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Solution

The fourth proportional to 87,084.90, 130,685.52 and 31,680.90 is: 47,542.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,084.90 : 130,685.52 = 31,680.90 : x
  2. Step 2: Convert to fraction form
    87,084.90/130,685.52 = 31,680.90/x
  3. Step 3: Cross multiply
    87,084.90x = 130,685.52 × 31,680.90
  4. Step 4: Simplify right side
    87,084.90x = 4,140,234,890.57
  5. Step 5: Solve for x
    x = 4,140,234,890.57/87,084.90
  6. Step 6: Final answer
    x = 47,542.51

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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.