Home / 80,432.44-120,570.90-30,478.12

Finding the Fourth Proportional to 80,432.44, 120,570.90 and 30,478.12

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Solution

The fourth proportional to 80,432.44, 120,570.90 and 30,478.12 is: 45,687.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,432.44 : 120,570.90 = 30,478.12 : x
  2. Step 2: Convert to fraction form
    80,432.44/120,570.90 = 30,478.12/x
  3. Step 3: Cross multiply
    80,432.44x = 120,570.90 × 30,478.12
  4. Step 4: Simplify right side
    80,432.44x = 3,674,774,358.71
  5. Step 5: Solve for x
    x = 3,674,774,358.71/80,432.44
  6. Step 6: Final answer
    x = 45,687.71

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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.