Home / 72,161.12-108,142.80-40,586.48

Finding the Fourth Proportional to 72,161.12, 108,142.80 and 40,586.48

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Solution

The fourth proportional to 72,161.12, 108,142.80 and 40,586.48 is: 60,824.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,161.12 : 108,142.80 = 40,586.48 : x
  2. Step 2: Convert to fraction form
    72,161.12/108,142.80 = 40,586.48/x
  3. Step 3: Cross multiply
    72,161.12x = 108,142.80 × 40,586.48
  4. Step 4: Simplify right side
    72,161.12x = 4,389,135,589.34
  5. Step 5: Solve for x
    x = 4,389,135,589.34/72,161.12
  6. Step 6: Final answer
    x = 60,824.11

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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.