Home / 72,375.20-108,557.40-30,244.40

Finding the Fourth Proportional to 72,375.20, 108,557.40 and 30,244.40

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Solution

The fourth proportional to 72,375.20, 108,557.40 and 30,244.40 is: 45,364.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,375.20 : 108,557.40 = 30,244.40 : x
  2. Step 2: Convert to fraction form
    72,375.20/108,557.40 = 30,244.40/x
  3. Step 3: Cross multiply
    72,375.20x = 108,557.40 × 30,244.40
  4. Step 4: Simplify right side
    72,375.20x = 3,283,253,428.56
  5. Step 5: Solve for x
    x = 3,283,253,428.56/72,375.20
  6. Step 6: Final answer
    x = 45,364.34

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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.