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Finding the Fourth Proportional to 81,383.97, 112,304.43 and 45,082.96

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Solution

The fourth proportional to 81,383.97, 112,304.43 and 45,082.96 is: 62,211.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,383.97 : 112,304.43 = 45,082.96 : x
  2. Step 2: Convert to fraction form
    81,383.97/112,304.43 = 45,082.96/x
  3. Step 3: Cross multiply
    81,383.97x = 112,304.43 × 45,082.96
  4. Step 4: Simplify right side
    81,383.97x = 5,063,016,013.81
  5. Step 5: Solve for x
    x = 5,063,016,013.81/81,383.97
  6. Step 6: Final answer
    x = 62,211.47

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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.