Home / 45,131.78-67,707.02-13,540.57

Finding the Fourth Proportional to 45,131.78, 67,707.02 and 13,540.57

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Solution

The fourth proportional to 45,131.78, 67,707.02 and 13,540.57 is: 20,313.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,131.78 : 67,707.02 = 13,540.57 : x
  2. Step 2: Convert to fraction form
    45,131.78/67,707.02 = 13,540.57/x
  3. Step 3: Cross multiply
    45,131.78x = 67,707.02 × 13,540.57
  4. Step 4: Simplify right side
    45,131.78x = 916,791,508.39
  5. Step 5: Solve for x
    x = 916,791,508.39/45,131.78
  6. Step 6: Final answer
    x = 20,313.66

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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.