Home / 42,747.18-64,121.87-20,252.59

Finding the Fourth Proportional to 42,747.18, 64,121.87 and 20,252.59

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Solution

The fourth proportional to 42,747.18, 64,121.87 and 20,252.59 is: 30,379.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,747.18 : 64,121.87 = 20,252.59 : x
  2. Step 2: Convert to fraction form
    42,747.18/64,121.87 = 20,252.59/x
  3. Step 3: Cross multiply
    42,747.18x = 64,121.87 × 20,252.59
  4. Step 4: Simplify right side
    42,747.18x = 1,298,633,922.03
  5. Step 5: Solve for x
    x = 1,298,633,922.03/42,747.18
  6. Step 6: Final answer
    x = 30,379.41

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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.