Home / 40,112.90-60,176.18-20,131.92

Finding the Fourth Proportional to 40,112.90, 60,176.18 and 20,131.92

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Solution

The fourth proportional to 40,112.90, 60,176.18 and 20,131.92 is: 30,201.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,112.90 : 60,176.18 = 20,131.92 : x
  2. Step 2: Convert to fraction form
    40,112.90/60,176.18 = 20,131.92/x
  3. Step 3: Cross multiply
    40,112.90x = 60,176.18 × 20,131.92
  4. Step 4: Simplify right side
    40,112.90x = 1,211,461,840.90
  5. Step 5: Solve for x
    x = 1,211,461,840.90/40,112.90
  6. Step 6: Final answer
    x = 30,201.31

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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.