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Finding the Fourth Proportional to 84,469.37, 126,703.95 and 38,872.47

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Solution

The fourth proportional to 84,469.37, 126,703.95 and 38,872.47 is: 58,308.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,469.37 : 126,703.95 = 38,872.47 : x
  2. Step 2: Convert to fraction form
    84,469.37/126,703.95 = 38,872.47/x
  3. Step 3: Cross multiply
    84,469.37x = 126,703.95 × 38,872.47
  4. Step 4: Simplify right side
    84,469.37x = 4,925,295,824.62
  5. Step 5: Solve for x
    x = 4,925,295,824.62/84,469.37
  6. Step 6: Final answer
    x = 58,308.66

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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.