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Finding the Fourth Proportional to 71,839.72, 99,179.94 and 48,006.76

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Solution

The fourth proportional to 71,839.72, 99,179.94 and 48,006.76 is: 66,276.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,839.72 : 99,179.94 = 48,006.76 : x
  2. Step 2: Convert to fraction form
    71,839.72/99,179.94 = 48,006.76/x
  3. Step 3: Cross multiply
    71,839.72x = 99,179.94 × 48,006.76
  4. Step 4: Simplify right side
    71,839.72x = 4,761,307,576.39
  5. Step 5: Solve for x
    x = 4,761,307,576.39/71,839.72
  6. Step 6: Final answer
    x = 66,276.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.