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Finding the Fourth Proportional to 81,791.36, 112,876.08 and 45,992.60

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Solution

The fourth proportional to 81,791.36, 112,876.08 and 45,992.60 is: 63,472.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,791.36 : 112,876.08 = 45,992.60 : x
  2. Step 2: Convert to fraction form
    81,791.36/112,876.08 = 45,992.60/x
  3. Step 3: Cross multiply
    81,791.36x = 112,876.08 × 45,992.60
  4. Step 4: Simplify right side
    81,791.36x = 5,191,464,397.01
  5. Step 5: Solve for x
    x = 5,191,464,397.01/81,791.36
  6. Step 6: Final answer
    x = 63,472.04

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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.