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Finding the Fourth Proportional to 81,229.93, 121,658.95 and 49,570.28

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Solution

The fourth proportional to 81,229.93, 121,658.95 and 49,570.28 is: 74,241.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,229.93 : 121,658.95 = 49,570.28 : x
  2. Step 2: Convert to fraction form
    81,229.93/121,658.95 = 49,570.28/x
  3. Step 3: Cross multiply
    81,229.93x = 121,658.95 × 49,570.28
  4. Step 4: Simplify right side
    81,229.93x = 6,030,668,949.64
  5. Step 5: Solve for x
    x = 6,030,668,949.64/81,229.93
  6. Step 6: Final answer
    x = 74,241.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.