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Finding the Fourth Proportional to 52,251.68, 78,378.52 and 16,719.76

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Solution

The fourth proportional to 52,251.68, 78,378.52 and 16,719.76 is: 25,079.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,251.68 : 78,378.52 = 16,719.76 : x
  2. Step 2: Convert to fraction form
    52,251.68/78,378.52 = 16,719.76/x
  3. Step 3: Cross multiply
    52,251.68x = 78,378.52 × 16,719.76
  4. Step 4: Simplify right side
    52,251.68x = 1,310,470,043.56
  5. Step 5: Solve for x
    x = 1,310,470,043.56/52,251.68
  6. Step 6: Final answer
    x = 25,079.96

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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.