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Finding the Fourth Proportional to 81,165.43, 112,006.15 and 45,355.74

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Solution

The fourth proportional to 81,165.43, 112,006.15 and 45,355.74 is: 62,589.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,165.43 : 112,006.15 = 45,355.74 : x
  2. Step 2: Convert to fraction form
    81,165.43/112,006.15 = 45,355.74/x
  3. Step 3: Cross multiply
    81,165.43x = 112,006.15 × 45,355.74
  4. Step 4: Simplify right side
    81,165.43x = 5,080,121,284.39
  5. Step 5: Solve for x
    x = 5,080,121,284.39/81,165.43
  6. Step 6: Final answer
    x = 62,589.72

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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.