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Finding the Fourth Proportional to 101,660.82, 152,439.39 and 42,480.60

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Solution

The fourth proportional to 101,660.82, 152,439.39 and 42,480.60 is: 63,699.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,660.82 : 152,439.39 = 42,480.60 : x
  2. Step 2: Convert to fraction form
    101,660.82/152,439.39 = 42,480.60/x
  3. Step 3: Cross multiply
    101,660.82x = 152,439.39 × 42,480.60
  4. Step 4: Simplify right side
    101,660.82x = 6,475,716,750.83
  5. Step 5: Solve for x
    x = 6,475,716,750.83/101,660.82
  6. Step 6: Final answer
    x = 63,699.24

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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.