Home / 90,992.11-136,564.85-38,439.31

Finding the Fourth Proportional to 90,992.11, 136,564.85 and 38,439.31

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Solution

The fourth proportional to 90,992.11, 136,564.85 and 38,439.31 is: 57,691.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,992.11 : 136,564.85 = 38,439.31 : x
  2. Step 2: Convert to fraction form
    90,992.11/136,564.85 = 38,439.31/x
  3. Step 3: Cross multiply
    90,992.11x = 136,564.85 × 38,439.31
  4. Step 4: Simplify right side
    90,992.11x = 5,249,458,604.25
  5. Step 5: Solve for x
    x = 5,249,458,604.25/90,992.11
  6. Step 6: Final answer
    x = 57,691.36

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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.