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Finding the Fourth Proportional to 71,672.22, 98,884.55 and 39,834.98

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Solution

The fourth proportional to 71,672.22, 98,884.55 and 39,834.98 is: 54,959.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,672.22 : 98,884.55 = 39,834.98 : x
  2. Step 2: Convert to fraction form
    71,672.22/98,884.55 = 39,834.98/x
  3. Step 3: Cross multiply
    71,672.22x = 98,884.55 × 39,834.98
  4. Step 4: Simplify right side
    71,672.22x = 3,939,063,377.96
  5. Step 5: Solve for x
    x = 3,939,063,377.96/71,672.22
  6. Step 6: Final answer
    x = 54,959.42

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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.