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Finding the Fourth Proportional to 101,639.68, 152,469.60 and 42,493.84

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Solution

The fourth proportional to 101,639.68, 152,469.60 and 42,493.84 is: 63,744.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,639.68 : 152,469.60 = 42,493.84 : x
  2. Step 2: Convert to fraction form
    101,639.68/152,469.60 = 42,493.84/x
  3. Step 3: Cross multiply
    101,639.68x = 152,469.60 × 42,493.84
  4. Step 4: Simplify right side
    101,639.68x = 6,479,018,787.26
  5. Step 5: Solve for x
    x = 6,479,018,787.26/101,639.68
  6. Step 6: Final answer
    x = 63,744.97

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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.