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Finding the Fourth Proportional to 45,415.80, 68,123.70 and 41,479.20

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Solution

The fourth proportional to 45,415.80, 68,123.70 and 41,479.20 is: 62,218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,415.80 : 68,123.70 = 41,479.20 : x
  2. Step 2: Convert to fraction form
    45,415.80/68,123.70 = 41,479.20/x
  3. Step 3: Cross multiply
    45,415.80x = 68,123.70 × 41,479.20
  4. Step 4: Simplify right side
    45,415.80x = 2,825,716,577.04
  5. Step 5: Solve for x
    x = 2,825,716,577.04/45,415.80
  6. Step 6: Final answer
    x = 62,218.80

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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.