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Finding the Fourth Proportional to 65,654.73, 90,603.45 and 38,806.92

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Solution

The fourth proportional to 65,654.73, 90,603.45 and 38,806.92 is: 53,553.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,654.73 : 90,603.45 = 38,806.92 : x
  2. Step 2: Convert to fraction form
    65,654.73/90,603.45 = 38,806.92/x
  3. Step 3: Cross multiply
    65,654.73x = 90,603.45 × 38,806.92
  4. Step 4: Simplify right side
    65,654.73x = 3,516,040,835.87
  5. Step 5: Solve for x
    x = 3,516,040,835.87/65,654.73
  6. Step 6: Final answer
    x = 53,553.50

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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.