Home / 87,399,138.60-131,248,007.10-57,240,700.20

Finding the Fourth Proportional to 87,399,138.60, 131,248,007.10 and 57,240,700.20

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Solution

The fourth proportional to 87,399,138.60, 131,248,007.10 and 57,240,700.20 is: 85,958,831.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,399,138.60 : 131,248,007.10 = 57,240,700.20 : x
  2. Step 2: Convert to fraction form
    87,399,138.60/131,248,007.10 = 57,240,700.20/x
  3. Step 3: Cross multiply
    87,399,138.60x = 131,248,007.10 × 57,240,700.20
  4. Step 4: Simplify right side
    87,399,138.60x = 7,512,727,826,258,571
  5. Step 5: Solve for x
    x = 7,512,727,826,258,571/87,399,138.60
  6. Step 6: Final answer
    x = 85,958,831.48

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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.