Home / 90,982.11-136,549.85-38,429.31

Finding the Fourth Proportional to 90,982.11, 136,549.85 and 38,429.31

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Solution

The fourth proportional to 90,982.11, 136,549.85 and 38,429.31 is: 57,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,982.11 : 136,549.85 = 38,429.31 : x
  2. Step 2: Convert to fraction form
    90,982.11/136,549.85 = 38,429.31/x
  3. Step 3: Cross multiply
    90,982.11x = 136,549.85 × 38,429.31
  4. Step 4: Simplify right side
    90,982.11x = 5,247,516,323.96
  5. Step 5: Solve for x
    x = 5,247,516,323.96/90,982.11
  6. Step 6: Final answer
    x = 57,676.35

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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.