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Finding the Fourth Proportional to 81,601.64, 112,609.96 and 45,791.58

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Solution

The fourth proportional to 81,601.64, 112,609.96 and 45,791.58 is: 63,192.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,601.64 : 112,609.96 = 45,791.58 : x
  2. Step 2: Convert to fraction form
    81,601.64/112,609.96 = 45,791.58/x
  3. Step 3: Cross multiply
    81,601.64x = 112,609.96 × 45,791.58
  4. Step 4: Simplify right side
    81,601.64x = 5,156,587,992.14
  5. Step 5: Solve for x
    x = 5,156,587,992.14/81,601.64
  6. Step 6: Final answer
    x = 63,192.21

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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.