Home / 80,627.65-120,942.55-28,038.13

Finding the Fourth Proportional to 80,627.65, 120,942.55 and 28,038.13

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Solution

The fourth proportional to 80,627.65, 120,942.55 and 28,038.13 is: 42,057.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,627.65 : 120,942.55 = 28,038.13 : x
  2. Step 2: Convert to fraction form
    80,627.65/120,942.55 = 28,038.13/x
  3. Step 3: Cross multiply
    80,627.65x = 120,942.55 × 28,038.13
  4. Step 4: Simplify right side
    80,627.65x = 3,391,002,672.12
  5. Step 5: Solve for x
    x = 3,391,002,672.12/80,627.65
  6. Step 6: Final answer
    x = 42,057.57

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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.