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Finding the Fourth Proportional to 71,406.80, 107,037.30 and 41,809.40

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Solution

The fourth proportional to 71,406.80, 107,037.30 and 41,809.40 is: 62,671.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,406.80 : 107,037.30 = 41,809.40 : x
  2. Step 2: Convert to fraction form
    71,406.80/107,037.30 = 41,809.40/x
  3. Step 3: Cross multiply
    71,406.80x = 107,037.30 × 41,809.40
  4. Step 4: Simplify right side
    71,406.80x = 4,475,165,290.62
  5. Step 5: Solve for x
    x = 4,475,165,290.62/71,406.80
  6. Step 6: Final answer
    x = 62,671.42

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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.