Home / 81,535.20-112,470.84-51,272.64

Finding the Fourth Proportional to 81,535.20, 112,470.84 and 51,272.64

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Solution

The fourth proportional to 81,535.20, 112,470.84 and 51,272.64 is: 70,726.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,535.20 : 112,470.84 = 51,272.64 : x
  2. Step 2: Convert to fraction form
    81,535.20/112,470.84 = 51,272.64/x
  3. Step 3: Cross multiply
    81,535.20x = 112,470.84 × 51,272.64
  4. Step 4: Simplify right side
    81,535.20x = 5,766,676,889.82
  5. Step 5: Solve for x
    x = 5,766,676,889.82/81,535.20
  6. Step 6: Final answer
    x = 70,726.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.