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Finding the Fourth Proportional to 71,191.61, 98,246.39 and 39,362.55

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Solution

The fourth proportional to 71,191.61, 98,246.39 and 39,362.55 is: 54,321.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,191.61 : 98,246.39 = 39,362.55 : x
  2. Step 2: Convert to fraction form
    71,191.61/98,246.39 = 39,362.55/x
  3. Step 3: Cross multiply
    71,191.61x = 98,246.39 × 39,362.55
  4. Step 4: Simplify right side
    71,191.61x = 3,867,228,241.88
  5. Step 5: Solve for x
    x = 3,867,228,241.88/71,191.61
  6. Step 6: Final answer
    x = 54,321.41

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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.