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Finding the Fourth Proportional to 71,175.74, 98,223.11 and 39,345.17

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Solution

The fourth proportional to 71,175.74, 98,223.11 and 39,345.17 is: 54,296.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,175.74 : 98,223.11 = 39,345.17 : x
  2. Step 2: Convert to fraction form
    71,175.74/98,223.11 = 39,345.17/x
  3. Step 3: Cross multiply
    71,175.74x = 98,223.11 × 39,345.17
  4. Step 4: Simplify right side
    71,175.74x = 3,864,604,273.04
  5. Step 5: Solve for x
    x = 3,864,604,273.04/71,175.74
  6. Step 6: Final answer
    x = 54,296.65

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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.