Home / 85,009.20-127,514-25,845.36

Finding the Fourth Proportional to 85,009.20, 127,514 and 25,845.36

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Solution

The fourth proportional to 85,009.20, 127,514 and 25,845.36 is: 38,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,009.20 : 127,514 = 25,845.36 : x
  2. Step 2: Convert to fraction form
    85,009.20/127,514 = 25,845.36/x
  3. Step 3: Cross multiply
    85,009.20x = 127,514 × 25,845.36
  4. Step 4: Simplify right side
    85,009.20x = 3,295,645,235.04
  5. Step 5: Solve for x
    x = 3,295,645,235.04/85,009.20
  6. Step 6: Final answer
    x = 38,768.10

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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.