Home / 52,115.80-78,173.76-12,672.64

Finding the Fourth Proportional to 52,115.80, 78,173.76 and 12,672.64

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Solution

The fourth proportional to 52,115.80, 78,173.76 and 12,672.64 is: 19,008.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,115.80 : 78,173.76 = 12,672.64 : x
  2. Step 2: Convert to fraction form
    52,115.80/78,173.76 = 12,672.64/x
  3. Step 3: Cross multiply
    52,115.80x = 78,173.76 × 12,672.64
  4. Step 4: Simplify right side
    52,115.80x = 990,667,917.93
  5. Step 5: Solve for x
    x = 990,667,917.93/52,115.80
  6. Step 6: Final answer
    x = 19,008.97

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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.