Home / 51,559.92-77,354.40-19,979.52

Finding the Fourth Proportional to 51,559.92, 77,354.40 and 19,979.52

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Solution

The fourth proportional to 51,559.92, 77,354.40 and 19,979.52 is: 29,974.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,559.92 : 77,354.40 = 19,979.52 : x
  2. Step 2: Convert to fraction form
    51,559.92/77,354.40 = 19,979.52/x
  3. Step 3: Cross multiply
    51,559.92x = 77,354.40 × 19,979.52
  4. Step 4: Simplify right side
    51,559.92x = 1,545,503,781.89
  5. Step 5: Solve for x
    x = 1,545,503,781.89/51,559.92
  6. Step 6: Final answer
    x = 29,974.91

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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.