Home / 80,288.77-120,543.72-40,873.36

Finding the Fourth Proportional to 80,288.77, 120,543.72 and 40,873.36

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Solution

The fourth proportional to 80,288.77, 120,543.72 and 40,873.36 is: 61,366.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,288.77 : 120,543.72 = 40,873.36 : x
  2. Step 2: Convert to fraction form
    80,288.77/120,543.72 = 40,873.36/x
  3. Step 3: Cross multiply
    80,288.77x = 120,543.72 × 40,873.36
  4. Step 4: Simplify right side
    80,288.77x = 4,927,026,863.30
  5. Step 5: Solve for x
    x = 4,927,026,863.30/80,288.77
  6. Step 6: Final answer
    x = 61,366.33

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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.