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Finding the Fourth Proportional to 71,046.80, 98,044.05 and 39,215.69

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Solution

The fourth proportional to 71,046.80, 98,044.05 and 39,215.69 is: 54,117.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,046.80 : 98,044.05 = 39,215.69 : x
  2. Step 2: Convert to fraction form
    71,046.80/98,044.05 = 39,215.69/x
  3. Step 3: Cross multiply
    71,046.80x = 98,044.05 × 39,215.69
  4. Step 4: Simplify right side
    71,046.80x = 3,844,865,071.14
  5. Step 5: Solve for x
    x = 3,844,865,071.14/71,046.80
  6. Step 6: Final answer
    x = 54,117.36

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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.