Home / 80,842.25-121,155.90-42,883.70

Finding the Fourth Proportional to 80,842.25, 121,155.90 and 42,883.70

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Solution

The fourth proportional to 80,842.25, 121,155.90 and 42,883.70 is: 64,268.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,842.25 : 121,155.90 = 42,883.70 : x
  2. Step 2: Convert to fraction form
    80,842.25/121,155.90 = 42,883.70/x
  3. Step 3: Cross multiply
    80,842.25x = 121,155.90 × 42,883.70
  4. Step 4: Simplify right side
    80,842.25x = 5,195,612,663.05
  5. Step 5: Solve for x
    x = 5,195,612,663.05/80,842.25
  6. Step 6: Final answer
    x = 64,268.54

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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.