Home / 83,617.92-115,353.72-51,775.20

Finding the Fourth Proportional to 83,617.92, 115,353.72 and 51,775.20

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Solution

The fourth proportional to 83,617.92, 115,353.72 and 51,775.20 is: 71,425.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,617.92 : 115,353.72 = 51,775.20 : x
  2. Step 2: Convert to fraction form
    83,617.92/115,353.72 = 51,775.20/x
  3. Step 3: Cross multiply
    83,617.92x = 115,353.72 × 51,775.20
  4. Step 4: Simplify right side
    83,617.92x = 5,972,461,923.74
  5. Step 5: Solve for x
    x = 5,972,461,923.74/83,617.92
  6. Step 6: Final answer
    x = 71,425.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.