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Finding the Fourth Proportional to 45,325.80, 67,922.30 and 40,645.80

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Solution

The fourth proportional to 45,325.80, 67,922.30 and 40,645.80 is: 60,909.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,325.80 : 67,922.30 = 40,645.80 : x
  2. Step 2: Convert to fraction form
    45,325.80/67,922.30 = 40,645.80/x
  3. Step 3: Cross multiply
    45,325.80x = 67,922.30 × 40,645.80
  4. Step 4: Simplify right side
    45,325.80x = 2,760,756,221.34
  5. Step 5: Solve for x
    x = 2,760,756,221.34/45,325.80
  6. Step 6: Final answer
    x = 60,909.16

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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.