Home / 80,521.54-120,718.78-50,876.89

Finding the Fourth Proportional to 80,521.54, 120,718.78 and 50,876.89

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Solution

The fourth proportional to 80,521.54, 120,718.78 and 50,876.89 is: 76,275.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,521.54 : 120,718.78 = 50,876.89 : x
  2. Step 2: Convert to fraction form
    80,521.54/120,718.78 = 50,876.89/x
  3. Step 3: Cross multiply
    80,521.54x = 120,718.78 × 50,876.89
  4. Step 4: Simplify right side
    80,521.54x = 6,141,796,090.99
  5. Step 5: Solve for x
    x = 6,141,796,090.99/80,521.54
  6. Step 6: Final answer
    x = 76,275.19

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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.