Home / 80,712.03-111,386.20-67,260.77

Finding the Fourth Proportional to 80,712.03, 111,386.20 and 67,260.77

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Solution

The fourth proportional to 80,712.03, 111,386.20 and 67,260.77 is: 92,822.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,712.03 : 111,386.20 = 67,260.77 : x
  2. Step 2: Convert to fraction form
    80,712.03/111,386.20 = 67,260.77/x
  3. Step 3: Cross multiply
    80,712.03x = 111,386.20 × 67,260.77
  4. Step 4: Simplify right side
    80,712.03x = 7,491,921,579.37
  5. Step 5: Solve for x
    x = 7,491,921,579.37/80,712.03
  6. Step 6: Final answer
    x = 92,822.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.