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Finding the Fourth Proportional to 71,211.12, 98,182 and 45,672.42

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Solution

The fourth proportional to 71,211.12, 98,182 and 45,672.42 is: 62,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,211.12 : 98,182 = 45,672.42 : x
  2. Step 2: Convert to fraction form
    71,211.12/98,182 = 45,672.42/x
  3. Step 3: Cross multiply
    71,211.12x = 98,182 × 45,672.42
  4. Step 4: Simplify right side
    71,211.12x = 4,484,209,540.44
  5. Step 5: Solve for x
    x = 4,484,209,540.44/71,211.12
  6. Step 6: Final answer
    x = 62,970.64

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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.