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Finding the Fourth Proportional to 71,191.40, 98,246.16 and 39,362.34

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Solution

The fourth proportional to 71,191.40, 98,246.16 and 39,362.34 is: 54,321.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,191.40 : 98,246.16 = 39,362.34 : x
  2. Step 2: Convert to fraction form
    71,191.40/98,246.16 = 39,362.34/x
  3. Step 3: Cross multiply
    71,191.40x = 98,246.16 × 39,362.34
  4. Step 4: Simplify right side
    71,191.40x = 3,867,198,753.61
  5. Step 5: Solve for x
    x = 3,867,198,753.61/71,191.40
  6. Step 6: Final answer
    x = 54,321.15

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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.