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Finding the Fourth Proportional to 87,200.92, 130,879.14 and 40,480.12

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Solution

The fourth proportional to 87,200.92, 130,879.14 and 40,480.12 is: 60,756.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,200.92 : 130,879.14 = 40,480.12 : x
  2. Step 2: Convert to fraction form
    87,200.92/130,879.14 = 40,480.12/x
  3. Step 3: Cross multiply
    87,200.92x = 130,879.14 × 40,480.12
  4. Step 4: Simplify right side
    87,200.92x = 5,298,003,292.70
  5. Step 5: Solve for x
    x = 5,298,003,292.70/87,200.92
  6. Step 6: Final answer
    x = 60,756.28

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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.