Home / 76,923.56-115,385.28-21,519.56

Finding the Fourth Proportional to 76,923.56, 115,385.28 and 21,519.56

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Solution

The fourth proportional to 76,923.56, 115,385.28 and 21,519.56 is: 32,279.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,923.56 : 115,385.28 = 21,519.56 : x
  2. Step 2: Convert to fraction form
    76,923.56/115,385.28 = 21,519.56/x
  3. Step 3: Cross multiply
    76,923.56x = 115,385.28 × 21,519.56
  4. Step 4: Simplify right side
    76,923.56x = 2,483,040,456.08
  5. Step 5: Solve for x
    x = 2,483,040,456.08/76,923.56
  6. Step 6: Final answer
    x = 32,279.32

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1.5x scale

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.