Home / 71,557.71-107,329.28-18,972.51

Finding the Fourth Proportional to 71,557.71, 107,329.28 and 18,972.51

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Solution

The fourth proportional to 71,557.71, 107,329.28 and 18,972.51 is: 28,456.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,557.71 : 107,329.28 = 18,972.51 : x
  2. Step 2: Convert to fraction form
    71,557.71/107,329.28 = 18,972.51/x
  3. Step 3: Cross multiply
    71,557.71x = 107,329.28 × 18,972.51
  4. Step 4: Simplify right side
    71,557.71x = 2,036,305,743.23
  5. Step 5: Solve for x
    x = 2,036,305,743.23/71,557.71
  6. Step 6: Final answer
    x = 28,456.83

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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.