Home / 80,733.87-121,101.48-28,143.27

Finding the Fourth Proportional to 80,733.87, 121,101.48 and 28,143.27

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Solution

The fourth proportional to 80,733.87, 121,101.48 and 28,143.27 is: 42,215.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,733.87 : 121,101.48 = 28,143.27 : x
  2. Step 2: Convert to fraction form
    80,733.87/121,101.48 = 28,143.27/x
  3. Step 3: Cross multiply
    80,733.87x = 121,101.48 × 28,143.27
  4. Step 4: Simplify right side
    80,733.87x = 3,408,191,649.04
  5. Step 5: Solve for x
    x = 3,408,191,649.04/80,733.87
  6. Step 6: Final answer
    x = 42,215.14

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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.