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Finding the Fourth Proportional to 67,889.75, 101,801.70 and 39,818.97

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Solution

The fourth proportional to 67,889.75, 101,801.70 and 39,818.97 is: 59,709.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,889.75 : 101,801.70 = 39,818.97 : x
  2. Step 2: Convert to fraction form
    67,889.75/101,801.70 = 39,818.97/x
  3. Step 3: Cross multiply
    67,889.75x = 101,801.70 × 39,818.97
  4. Step 4: Simplify right side
    67,889.75x = 4,053,638,838.25
  5. Step 5: Solve for x
    x = 4,053,638,838.25/67,889.75
  6. Step 6: Final answer
    x = 59,709.15

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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.