Home / 52,434.24-78,652.72-12,990.78

Finding the Fourth Proportional to 52,434.24, 78,652.72 and 12,990.78

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Solution

The fourth proportional to 52,434.24, 78,652.72 and 12,990.78 is: 19,486.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,434.24 : 78,652.72 = 12,990.78 : x
  2. Step 2: Convert to fraction form
    52,434.24/78,652.72 = 12,990.78/x
  3. Step 3: Cross multiply
    52,434.24x = 78,652.72 × 12,990.78
  4. Step 4: Simplify right side
    52,434.24x = 1,021,760,198.16
  5. Step 5: Solve for x
    x = 1,021,760,198.16/52,434.24
  6. Step 6: Final answer
    x = 19,486.51

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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.