Home / 45,042.10-67,572.28-13,452.78

Finding the Fourth Proportional to 45,042.10, 67,572.28 and 13,452.78

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Solution

The fourth proportional to 45,042.10, 67,572.28 and 13,452.78 is: 20,181.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,042.10 : 67,572.28 = 13,452.78 : x
  2. Step 2: Convert to fraction form
    45,042.10/67,572.28 = 13,452.78/x
  3. Step 3: Cross multiply
    45,042.10x = 67,572.28 × 13,452.78
  4. Step 4: Simplify right side
    45,042.10x = 909,035,016.94
  5. Step 5: Solve for x
    x = 909,035,016.94/45,042.10
  6. Step 6: Final answer
    x = 20,181.90

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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.