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Finding the Fourth Proportional to 81,774.80, 112,847.88 and 45,474.80

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Solution

The fourth proportional to 81,774.80, 112,847.88 and 45,474.80 is: 62,754.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,774.80 : 112,847.88 = 45,474.80 : x
  2. Step 2: Convert to fraction form
    81,774.80/112,847.88 = 45,474.80/x
  3. Step 3: Cross multiply
    81,774.80x = 112,847.88 × 45,474.80
  4. Step 4: Simplify right side
    81,774.80x = 5,131,734,773.42
  5. Step 5: Solve for x
    x = 5,131,734,773.42/81,774.80
  6. Step 6: Final answer
    x = 62,754.48

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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.