Home / 80,849.32-121,309.26-28,296.52

Finding the Fourth Proportional to 80,849.32, 121,309.26 and 28,296.52

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Solution

The fourth proportional to 80,849.32, 121,309.26 and 28,296.52 is: 42,457.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,849.32 : 121,309.26 = 28,296.52 : x
  2. Step 2: Convert to fraction form
    80,849.32/121,309.26 = 28,296.52/x
  3. Step 3: Cross multiply
    80,849.32x = 121,309.26 × 28,296.52
  4. Step 4: Simplify right side
    80,849.32x = 3,432,629,901.78
  5. Step 5: Solve for x
    x = 3,432,629,901.78/80,849.32
  6. Step 6: Final answer
    x = 42,457.13

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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.