Home / 72,281.10-108,363.20-30,193.42

Finding the Fourth Proportional to 72,281.10, 108,363.20 and 30,193.42

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Solution

The fourth proportional to 72,281.10, 108,363.20 and 30,193.42 is: 45,265.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,281.10 : 108,363.20 = 30,193.42 : x
  2. Step 2: Convert to fraction form
    72,281.10/108,363.20 = 30,193.42/x
  3. Step 3: Cross multiply
    72,281.10x = 108,363.20 × 30,193.42
  4. Step 4: Simplify right side
    72,281.10x = 3,271,855,610.14
  5. Step 5: Solve for x
    x = 3,271,855,610.14/72,281.10
  6. Step 6: Final answer
    x = 45,265.71

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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.