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Finding the Fourth Proportional to 67,759.54, 101,620.95 and 28,308.40

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Solution

The fourth proportional to 67,759.54, 101,620.95 and 28,308.40 is: 42,454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,759.54 : 101,620.95 = 28,308.40 : x
  2. Step 2: Convert to fraction form
    67,759.54/101,620.95 = 28,308.40/x
  3. Step 3: Cross multiply
    67,759.54x = 101,620.95 × 28,308.40
  4. Step 4: Simplify right side
    67,759.54x = 2,876,726,500.98
  5. Step 5: Solve for x
    x = 2,876,726,500.98/67,759.54
  6. Step 6: Final answer
    x = 42,454.93

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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.