Home / 81,185.04-121,789.04-25,029.72

Finding the Fourth Proportional to 81,185.04, 121,789.04 and 25,029.72

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Solution

The fourth proportional to 81,185.04, 121,789.04 and 25,029.72 is: 37,548.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,185.04 : 121,789.04 = 25,029.72 : x
  2. Step 2: Convert to fraction form
    81,185.04/121,789.04 = 25,029.72/x
  3. Step 3: Cross multiply
    81,185.04x = 121,789.04 × 25,029.72
  4. Step 4: Simplify right side
    81,185.04x = 3,048,345,445.12
  5. Step 5: Solve for x
    x = 3,048,345,445.12/81,185.04
  6. Step 6: Final answer
    x = 37,548.12

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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.