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Finding the Fourth Proportional to 80,510.84, 120,815.40 and 50,887.88

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Solution

The fourth proportional to 80,510.84, 120,815.40 and 50,887.88 is: 76,362.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,510.84 : 120,815.40 = 50,887.88 : x
  2. Step 2: Convert to fraction form
    80,510.84/120,815.40 = 50,887.88/x
  3. Step 3: Cross multiply
    80,510.84x = 120,815.40 × 50,887.88
  4. Step 4: Simplify right side
    80,510.84x = 6,148,039,577.35
  5. Step 5: Solve for x
    x = 6,148,039,577.35/80,510.84
  6. Step 6: Final answer
    x = 76,362.88

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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.