Home / 52,294.78-78,442.14-21,151.90

Finding the Fourth Proportional to 52,294.78, 78,442.14 and 21,151.90

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Solution

The fourth proportional to 52,294.78, 78,442.14 and 21,151.90 is: 31,727.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,294.78 : 78,442.14 = 21,151.90 : x
  2. Step 2: Convert to fraction form
    52,294.78/78,442.14 = 21,151.90/x
  3. Step 3: Cross multiply
    52,294.78x = 78,442.14 × 21,151.90
  4. Step 4: Simplify right side
    52,294.78x = 1,659,200,301.07
  5. Step 5: Solve for x
    x = 1,659,200,301.07/52,294.78
  6. Step 6: Final answer
    x = 31,727.84

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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.