Home / 285,945.04-428,919.18-75,580.75

Finding the Fourth Proportional to 285,945.04, 428,919.18 and 75,580.75

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Solution

The fourth proportional to 285,945.04, 428,919.18 and 75,580.75 is: 113,371.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,945.04 : 428,919.18 = 75,580.75 : x
  2. Step 2: Convert to fraction form
    285,945.04/428,919.18 = 75,580.75/x
  3. Step 3: Cross multiply
    285,945.04x = 428,919.18 × 75,580.75
  4. Step 4: Simplify right side
    285,945.04x = 32,418,033,313.79
  5. Step 5: Solve for x
    x = 32,418,033,313.79/285,945.04
  6. Step 6: Final answer
    x = 113,371.55

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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.