Home / 285,765.18-428,614.89-75,419.52

Finding the Fourth Proportional to 285,765.18, 428,614.89 and 75,419.52

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Solution

The fourth proportional to 285,765.18, 428,614.89 and 75,419.52 is: 113,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,765.18 : 428,614.89 = 75,419.52 : x
  2. Step 2: Convert to fraction form
    285,765.18/428,614.89 = 75,419.52/x
  3. Step 3: Cross multiply
    285,765.18x = 428,614.89 × 75,419.52
  4. Step 4: Simplify right side
    285,765.18x = 32,325,929,268.65
  5. Step 5: Solve for x
    x = 32,325,929,268.65/285,765.18
  6. Step 6: Final answer
    x = 113,120.60

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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.