Home / 84,880.38-127,321.29-25,720.68

Finding the Fourth Proportional to 84,880.38, 127,321.29 and 25,720.68

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Solution

The fourth proportional to 84,880.38, 127,321.29 and 25,720.68 is: 38,581.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,880.38 : 127,321.29 = 25,720.68 : x
  2. Step 2: Convert to fraction form
    84,880.38/127,321.29 = 25,720.68/x
  3. Step 3: Cross multiply
    84,880.38x = 127,321.29 × 25,720.68
  4. Step 4: Simplify right side
    84,880.38x = 3,274,790,157.28
  5. Step 5: Solve for x
    x = 3,274,790,157.28/84,880.38
  6. Step 6: Final answer
    x = 38,581.24

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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.