Home / 75,713.32-113,565.66-20,305

Finding the Fourth Proportional to 75,713.32, 113,565.66 and 20,305

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Solution

The fourth proportional to 75,713.32, 113,565.66 and 20,305 is: 30,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,713.32 : 113,565.66 = 20,305 : x
  2. Step 2: Convert to fraction form
    75,713.32/113,565.66 = 20,305/x
  3. Step 3: Cross multiply
    75,713.32x = 113,565.66 × 20,305
  4. Step 4: Simplify right side
    75,713.32x = 2,305,950,726.30
  5. Step 5: Solve for x
    x = 2,305,950,726.30/75,713.32
  6. Step 6: Final answer
    x = 30,456.34

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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.