Home / 36,129.60-54,145.80-25,729.20

Finding the Fourth Proportional to 36,129.60, 54,145.80 and 25,729.20

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Solution

The fourth proportional to 36,129.60, 54,145.80 and 25,729.20 is: 38,559.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,129.60 : 54,145.80 = 25,729.20 : x
  2. Step 2: Convert to fraction form
    36,129.60/54,145.80 = 25,729.20/x
  3. Step 3: Cross multiply
    36,129.60x = 54,145.80 × 25,729.20
  4. Step 4: Simplify right side
    36,129.60x = 1,393,128,117.36
  5. Step 5: Solve for x
    x = 1,393,128,117.36/36,129.60
  6. Step 6: Final answer
    x = 38,559.19

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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.