Home / 52,077.30-78,116.40-12,634.75

Finding the Fourth Proportional to 52,077.30, 78,116.40 and 12,634.75

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Solution

The fourth proportional to 52,077.30, 78,116.40 and 12,634.75 is: 18,952.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,077.30 : 78,116.40 = 12,634.75 : x
  2. Step 2: Convert to fraction form
    52,077.30/78,116.40 = 12,634.75/x
  3. Step 3: Cross multiply
    52,077.30x = 78,116.40 × 12,634.75
  4. Step 4: Simplify right side
    52,077.30x = 986,981,282.55
  5. Step 5: Solve for x
    x = 986,981,282.55/52,077.30
  6. Step 6: Final answer
    x = 18,952.24

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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.