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Finding the Fourth Proportional to 71,162.40, 98,211.72 and 40,949.04

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Solution

The fourth proportional to 71,162.40, 98,211.72 and 40,949.04 is: 56,514.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,162.40 : 98,211.72 = 40,949.04 : x
  2. Step 2: Convert to fraction form
    71,162.40/98,211.72 = 40,949.04/x
  3. Step 3: Cross multiply
    71,162.40x = 98,211.72 × 40,949.04
  4. Step 4: Simplify right side
    71,162.40x = 4,021,675,650.75
  5. Step 5: Solve for x
    x = 4,021,675,650.75/71,162.40
  6. Step 6: Final answer
    x = 56,514.05

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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.