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Finding the Fourth Proportional to 45,180.90, 67,775.67 and 18,882.90

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Solution

The fourth proportional to 45,180.90, 67,775.67 and 18,882.90 is: 28,326.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,180.90 : 67,775.67 = 18,882.90 : x
  2. Step 2: Convert to fraction form
    45,180.90/67,775.67 = 18,882.90/x
  3. Step 3: Cross multiply
    45,180.90x = 67,775.67 × 18,882.90
  4. Step 4: Simplify right side
    45,180.90x = 1,279,801,199.04
  5. Step 5: Solve for x
    x = 1,279,801,199.04/45,180.90
  6. Step 6: Final answer
    x = 28,326.16

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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.