Home / 87,470.80-131,106.76-76,920.24

Finding the Fourth Proportional to 87,470.80, 131,106.76 and 76,920.24

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Solution

The fourth proportional to 87,470.80, 131,106.76 and 76,920.24 is: 115,292.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,470.80 : 131,106.76 = 76,920.24 : x
  2. Step 2: Convert to fraction form
    87,470.80/131,106.76 = 76,920.24/x
  3. Step 3: Cross multiply
    87,470.80x = 131,106.76 × 76,920.24
  4. Step 4: Simplify right side
    87,470.80x = 10,084,763,444.82
  5. Step 5: Solve for x
    x = 10,084,763,444.82/87,470.80
  6. Step 6: Final answer
    x = 115,292.91

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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.