Home / 40,142.56-60,131.76-18,764.68

Finding the Fourth Proportional to 40,142.56, 60,131.76 and 18,764.68

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Solution

The fourth proportional to 40,142.56, 60,131.76 and 18,764.68 is: 28,108.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,142.56 : 60,131.76 = 18,764.68 : x
  2. Step 2: Convert to fraction form
    40,142.56/60,131.76 = 18,764.68/x
  3. Step 3: Cross multiply
    40,142.56x = 60,131.76 × 18,764.68
  4. Step 4: Simplify right side
    40,142.56x = 1,128,353,234.24
  5. Step 5: Solve for x
    x = 1,128,353,234.24/40,142.56
  6. Step 6: Final answer
    x = 28,108.65

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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.