Home / 87,084.76-130,685.40-31,680.76

Finding the Fourth Proportional to 87,084.76, 130,685.40 and 31,680.76

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Solution

The fourth proportional to 87,084.76, 130,685.40 and 31,680.76 is: 47,542.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,084.76 : 130,685.40 = 31,680.76 : x
  2. Step 2: Convert to fraction form
    87,084.76/130,685.40 = 31,680.76/x
  3. Step 3: Cross multiply
    87,084.76x = 130,685.40 × 31,680.76
  4. Step 4: Simplify right side
    87,084.76x = 4,140,212,792.90
  5. Step 5: Solve for x
    x = 4,140,212,792.90/87,084.76
  6. Step 6: Final answer
    x = 47,542.33

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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.