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Finding the Fourth Proportional to 71,371.44, 98,488.71 and 39,538.44

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Solution

The fourth proportional to 71,371.44, 98,488.71 and 39,538.44 is: 54,560.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,371.44 : 98,488.71 = 39,538.44 : x
  2. Step 2: Convert to fraction form
    71,371.44/98,488.71 = 39,538.44/x
  3. Step 3: Cross multiply
    71,371.44x = 98,488.71 × 39,538.44
  4. Step 4: Simplify right side
    71,371.44x = 3,894,089,951.01
  5. Step 5: Solve for x
    x = 3,894,089,951.01/71,371.44
  6. Step 6: Final answer
    x = 54,560.90

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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.