Home / 80,486.18-120,847.74-45,016.98

Finding the Fourth Proportional to 80,486.18, 120,847.74 and 45,016.98

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Solution

The fourth proportional to 80,486.18, 120,847.74 and 45,016.98 is: 67,591.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,486.18 : 120,847.74 = 45,016.98 : x
  2. Step 2: Convert to fraction form
    80,486.18/120,847.74 = 45,016.98/x
  3. Step 3: Cross multiply
    80,486.18x = 120,847.74 × 45,016.98
  4. Step 4: Simplify right side
    80,486.18x = 5,440,200,294.63
  5. Step 5: Solve for x
    x = 5,440,200,294.63/80,486.18
  6. Step 6: Final answer
    x = 67,591.74

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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.