Home / 75,143.95-112,765.14-28,396.83

Finding the Fourth Proportional to 75,143.95, 112,765.14 and 28,396.83

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Solution

The fourth proportional to 75,143.95, 112,765.14 and 28,396.83 is: 42,613.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,143.95 : 112,765.14 = 28,396.83 : x
  2. Step 2: Convert to fraction form
    75,143.95/112,765.14 = 28,396.83/x
  3. Step 3: Cross multiply
    75,143.95x = 112,765.14 × 28,396.83
  4. Step 4: Simplify right side
    75,143.95x = 3,202,172,219.21
  5. Step 5: Solve for x
    x = 3,202,172,219.21/75,143.95
  6. Step 6: Final answer
    x = 42,613.84

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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.