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Finding the Fourth Proportional to 81,165.92, 112,006.85 and 45,356.09

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Solution

The fourth proportional to 81,165.92, 112,006.85 and 45,356.09 is: 62,590.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,165.92 : 112,006.85 = 45,356.09 : x
  2. Step 2: Convert to fraction form
    81,165.92/112,006.85 = 45,356.09/x
  3. Step 3: Cross multiply
    81,165.92x = 112,006.85 × 45,356.09
  4. Step 4: Simplify right side
    81,165.92x = 5,080,191,982.40
  5. Step 5: Solve for x
    x = 5,080,191,982.40/81,165.92
  6. Step 6: Final answer
    x = 62,590.21

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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.