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Finding the Fourth Proportional to 66,479.80, 99,573.18 and 54,950.82

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Solution

The fourth proportional to 66,479.80, 99,573.18 and 54,950.82 is: 82,305.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,479.80 : 99,573.18 = 54,950.82 : x
  2. Step 2: Convert to fraction form
    66,479.80/99,573.18 = 54,950.82/x
  3. Step 3: Cross multiply
    66,479.80x = 99,573.18 × 54,950.82
  4. Step 4: Simplify right side
    66,479.80x = 5,471,627,891.01
  5. Step 5: Solve for x
    x = 5,471,627,891.01/66,479.80
  6. Step 6: Final answer
    x = 82,305.12

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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.