Home / 312,726.18-469,089.38-76,067.40

Finding the Fourth Proportional to 312,726.18, 469,089.38 and 76,067.40

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Solution

The fourth proportional to 312,726.18, 469,089.38 and 76,067.40 is: 114,101.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,726.18 : 469,089.38 = 76,067.40 : x
  2. Step 2: Convert to fraction form
    312,726.18/469,089.38 = 76,067.40/x
  3. Step 3: Cross multiply
    312,726.18x = 469,089.38 × 76,067.40
  4. Step 4: Simplify right side
    312,726.18x = 35,682,409,504.21
  5. Step 5: Solve for x
    x = 35,682,409,504.21/312,726.18
  6. Step 6: Final answer
    x = 114,101.13

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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.