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Finding the Fourth Proportional to 81,636.75, 112,658.90 and 45,338.22

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Solution

The fourth proportional to 81,636.75, 112,658.90 and 45,338.22 is: 62,566.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,636.75 : 112,658.90 = 45,338.22 : x
  2. Step 2: Convert to fraction form
    81,636.75/112,658.90 = 45,338.22/x
  3. Step 3: Cross multiply
    81,636.75x = 112,658.90 × 45,338.22
  4. Step 4: Simplify right side
    81,636.75x = 5,107,753,766.47
  5. Step 5: Solve for x
    x = 5,107,753,766.47/81,636.75
  6. Step 6: Final answer
    x = 62,566.84

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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.