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Finding the Fourth Proportional to 79,775.20, 119,662.80 and 37,641.43

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Solution

The fourth proportional to 79,775.20, 119,662.80 and 37,641.43 is: 56,462.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,775.20 : 119,662.80 = 37,641.43 : x
  2. Step 2: Convert to fraction form
    79,775.20/119,662.80 = 37,641.43/x
  3. Step 3: Cross multiply
    79,775.20x = 119,662.80 × 37,641.43
  4. Step 4: Simplify right side
    79,775.20x = 4,504,278,909.80
  5. Step 5: Solve for x
    x = 4,504,278,909.80/79,775.20
  6. Step 6: Final answer
    x = 56,462.15

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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.