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Finding the Fourth Proportional to 71.59, 98.68 and 43.91

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Solution

The fourth proportional to 71.59, 98.68 and 43.91 is: 60.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.59 : 98.68 = 43.91 : x
  2. Step 2: Convert to fraction form
    71.59/98.68 = 43.91/x
  3. Step 3: Cross multiply
    71.59x = 98.68 × 43.91
  4. Step 4: Simplify right side
    71.59x = 4,333.04
  5. Step 5: Solve for x
    x = 4,333.04/71.59
  6. Step 6: Final answer
    x = 60.53

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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.