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Finding the Fourth Proportional to 81,667.92, 112,711.02 and 45,869.52

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Solution

The fourth proportional to 81,667.92, 112,711.02 and 45,869.52 is: 63,305.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,667.92 : 112,711.02 = 45,869.52 : x
  2. Step 2: Convert to fraction form
    81,667.92/112,711.02 = 45,869.52/x
  3. Step 3: Cross multiply
    81,667.92x = 112,711.02 × 45,869.52
  4. Step 4: Simplify right side
    81,667.92x = 5,170,000,386.11
  5. Step 5: Solve for x
    x = 5,170,000,386.11/81,667.92
  6. Step 6: Final answer
    x = 63,305.16

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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.