Home / 81,272.90-112,151.30-45,456.70

Finding the Fourth Proportional to 81,272.90, 112,151.30 and 45,456.70

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Solution

The fourth proportional to 81,272.90, 112,151.30 and 45,456.70 is: 62,727.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,272.90 : 112,151.30 = 45,456.70 : x
  2. Step 2: Convert to fraction form
    81,272.90/112,151.30 = 45,456.70/x
  3. Step 3: Cross multiply
    81,272.90x = 112,151.30 × 45,456.70
  4. Step 4: Simplify right side
    81,272.90x = 5,098,027,998.71
  5. Step 5: Solve for x
    x = 5,098,027,998.71/81,272.90
  6. Step 6: Final answer
    x = 62,727.28

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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.