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Finding the Fourth Proportional to 75,478.80, 113,218.20 and 22,890.90

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Solution

The fourth proportional to 75,478.80, 113,218.20 and 22,890.90 is: 34,336.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,478.80 : 113,218.20 = 22,890.90 : x
  2. Step 2: Convert to fraction form
    75,478.80/113,218.20 = 22,890.90/x
  3. Step 3: Cross multiply
    75,478.80x = 113,218.20 × 22,890.90
  4. Step 4: Simplify right side
    75,478.80x = 2,591,666,494.38
  5. Step 5: Solve for x
    x = 2,591,666,494.38/75,478.80
  6. Step 6: Final answer
    x = 34,336.35

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Similar ratio
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1.5x scale

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.