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Finding the Fourth Proportional to 81,641.18, 112,657.13 and 45,824.20

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Solution

The fourth proportional to 81,641.18, 112,657.13 and 45,824.20 is: 63,233.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,641.18 : 112,657.13 = 45,824.20 : x
  2. Step 2: Convert to fraction form
    81,641.18/112,657.13 = 45,824.20/x
  3. Step 3: Cross multiply
    81,641.18x = 112,657.13 × 45,824.20
  4. Step 4: Simplify right side
    81,641.18x = 5,162,422,517.62
  5. Step 5: Solve for x
    x = 5,162,422,517.62/81,641.18
  6. Step 6: Final answer
    x = 63,233.07

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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.