Home / 81,235.73-112,105.68-45,425.76

Finding the Fourth Proportional to 81,235.73, 112,105.68 and 45,425.76

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Solution

The fourth proportional to 81,235.73, 112,105.68 and 45,425.76 is: 62,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,235.73 : 112,105.68 = 45,425.76 : x
  2. Step 2: Convert to fraction form
    81,235.73/112,105.68 = 45,425.76/x
  3. Step 3: Cross multiply
    81,235.73x = 112,105.68 × 45,425.76
  4. Step 4: Simplify right side
    81,235.73x = 5,092,485,123.57
  5. Step 5: Solve for x
    x = 5,092,485,123.57/81,235.73
  6. Step 6: Final answer
    x = 62,687.75

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1.5x scale

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.