Home / 80,273.16-120,385.08-30,376.80

Finding the Fourth Proportional to 80,273.16, 120,385.08 and 30,376.80

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Solution

The fourth proportional to 80,273.16, 120,385.08 and 30,376.80 is: 45,555.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,273.16 : 120,385.08 = 30,376.80 : x
  2. Step 2: Convert to fraction form
    80,273.16/120,385.08 = 30,376.80/x
  3. Step 3: Cross multiply
    80,273.16x = 120,385.08 × 30,376.80
  4. Step 4: Simplify right side
    80,273.16x = 3,656,913,498.14
  5. Step 5: Solve for x
    x = 3,656,913,498.14/80,273.16
  6. Step 6: Final answer
    x = 45,555.87

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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.