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Finding the Fourth Proportional to 54,315.30, 81,472.95 and 49,649.70

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Solution

The fourth proportional to 54,315.30, 81,472.95 and 49,649.70 is: 74,474.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,315.30 : 81,472.95 = 49,649.70 : x
  2. Step 2: Convert to fraction form
    54,315.30/81,472.95 = 49,649.70/x
  3. Step 3: Cross multiply
    54,315.30x = 81,472.95 × 49,649.70
  4. Step 4: Simplify right side
    54,315.30x = 4,045,107,525.62
  5. Step 5: Solve for x
    x = 4,045,107,525.62/54,315.30
  6. Step 6: Final answer
    x = 74,474.55

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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.