Home / 80,697.39-121,049.33-28,112.19

Finding the Fourth Proportional to 80,697.39, 121,049.33 and 28,112.19

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Solution

The fourth proportional to 80,697.39, 121,049.33 and 28,112.19 is: 42,169.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,697.39 : 121,049.33 = 28,112.19 : x
  2. Step 2: Convert to fraction form
    80,697.39/121,049.33 = 28,112.19/x
  3. Step 3: Cross multiply
    80,697.39x = 121,049.33 × 28,112.19
  4. Step 4: Simplify right side
    80,697.39x = 3,402,961,623.77
  5. Step 5: Solve for x
    x = 3,402,961,623.77/80,697.39
  6. Step 6: Final answer
    x = 42,169.41

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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.