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Finding the Fourth Proportional to 101,620.38, 152,455.95 and 42,425.58

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Solution

The fourth proportional to 101,620.38, 152,455.95 and 42,425.58 is: 63,648.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,620.38 : 152,455.95 = 42,425.58 : x
  2. Step 2: Convert to fraction form
    101,620.38/152,455.95 = 42,425.58/x
  3. Step 3: Cross multiply
    101,620.38x = 152,455.95 × 42,425.58
  4. Step 4: Simplify right side
    101,620.38x = 6,468,032,103.20
  5. Step 5: Solve for x
    x = 6,468,032,103.20/101,620.38
  6. Step 6: Final answer
    x = 63,648.97

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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.