Home / 52,540.20-78,741.90-21,339

Finding the Fourth Proportional to 52,540.20, 78,741.90 and 21,339

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Solution

The fourth proportional to 52,540.20, 78,741.90 and 21,339 is: 31,980.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,540.20 : 78,741.90 = 21,339 : x
  2. Step 2: Convert to fraction form
    52,540.20/78,741.90 = 21,339/x
  3. Step 3: Cross multiply
    52,540.20x = 78,741.90 × 21,339
  4. Step 4: Simplify right side
    52,540.20x = 1,680,273,404.10
  5. Step 5: Solve for x
    x = 1,680,273,404.10/52,540.20
  6. Step 6: Final answer
    x = 31,980.72

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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.