Home / 71,764.24-107,637.90-19,177.78

Finding the Fourth Proportional to 71,764.24, 107,637.90 and 19,177.78

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Solution

The fourth proportional to 71,764.24, 107,637.90 and 19,177.78 is: 28,764.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,764.24 : 107,637.90 = 19,177.78 : x
  2. Step 2: Convert to fraction form
    71,764.24/107,637.90 = 19,177.78/x
  3. Step 3: Cross multiply
    71,764.24x = 107,637.90 × 19,177.78
  4. Step 4: Simplify right side
    71,764.24x = 2,064,255,965.86
  5. Step 5: Solve for x
    x = 2,064,255,965.86/71,764.24
  6. Step 6: Final answer
    x = 28,764.41

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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.