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Finding the Fourth Proportional to 71,494.74, 98,658.45 and 39,661.74

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Solution

The fourth proportional to 71,494.74, 98,658.45 and 39,661.74 is: 54,730.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,494.74 : 98,658.45 = 39,661.74 : x
  2. Step 2: Convert to fraction form
    71,494.74/98,658.45 = 39,661.74/x
  3. Step 3: Cross multiply
    71,494.74x = 98,658.45 × 39,661.74
  4. Step 4: Simplify right side
    71,494.74x = 3,912,965,792.70
  5. Step 5: Solve for x
    x = 3,912,965,792.70/71,494.74
  6. Step 6: Final answer
    x = 54,730.82

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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.