Home / 80,209.71-120,532.65-42,796.22

Finding the Fourth Proportional to 80,209.71, 120,532.65 and 42,796.22

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Solution

The fourth proportional to 80,209.71, 120,532.65 and 42,796.22 is: 64,310.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,209.71 : 120,532.65 = 42,796.22 : x
  2. Step 2: Convert to fraction form
    80,209.71/120,532.65 = 42,796.22/x
  3. Step 3: Cross multiply
    80,209.71x = 120,532.65 × 42,796.22
  4. Step 4: Simplify right side
    80,209.71x = 5,158,341,203.92
  5. Step 5: Solve for x
    x = 5,158,341,203.92/80,209.71
  6. Step 6: Final answer
    x = 64,310.68

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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.