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Finding the Fourth Proportional to 71,169.70, 98,218.02 and 39,341.56

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Solution

The fourth proportional to 71,169.70, 98,218.02 and 39,341.56 is: 54,293.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,169.70 : 98,218.02 = 39,341.56 : x
  2. Step 2: Convert to fraction form
    71,169.70/98,218.02 = 39,341.56/x
  3. Step 3: Cross multiply
    71,169.70x = 98,218.02 × 39,341.56
  4. Step 4: Simplify right side
    71,169.70x = 3,864,050,126.91
  5. Step 5: Solve for x
    x = 3,864,050,126.91/71,169.70
  6. Step 6: Final answer
    x = 54,293.47

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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.