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Finding the Fourth Proportional to 62,781, 94,177.68 and 20,643.96

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Solution

The fourth proportional to 62,781, 94,177.68 and 20,643.96 is: 30,967.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,781 : 94,177.68 = 20,643.96 : x
  2. Step 2: Convert to fraction form
    62,781/94,177.68 = 20,643.96/x
  3. Step 3: Cross multiply
    62,781x = 94,177.68 × 20,643.96
  4. Step 4: Simplify right side
    62,781x = 1,944,200,258.81
  5. Step 5: Solve for x
    x = 1,944,200,258.81/62,781
  6. Step 6: Final answer
    x = 30,967.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.