Home / 81,517.74-112,497.30-45,708.18

Finding the Fourth Proportional to 81,517.74, 112,497.30 and 45,708.18

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Solution

The fourth proportional to 81,517.74, 112,497.30 and 45,708.18 is: 63,078.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,517.74 : 112,497.30 = 45,708.18 : x
  2. Step 2: Convert to fraction form
    81,517.74/112,497.30 = 45,708.18/x
  3. Step 3: Cross multiply
    81,517.74x = 112,497.30 × 45,708.18
  4. Step 4: Simplify right side
    81,517.74x = 5,142,046,837.91
  5. Step 5: Solve for x
    x = 5,142,046,837.91/81,517.74
  6. Step 6: Final answer
    x = 63,078.87

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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.