Home / 81,165.06-121,738.92-38,460.18

Finding the Fourth Proportional to 81,165.06, 121,738.92 and 38,460.18

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Solution

The fourth proportional to 81,165.06, 121,738.92 and 38,460.18 is: 57,686.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,165.06 : 121,738.92 = 38,460.18 : x
  2. Step 2: Convert to fraction form
    81,165.06/121,738.92 = 38,460.18/x
  3. Step 3: Cross multiply
    81,165.06x = 121,738.92 × 38,460.18
  4. Step 4: Simplify right side
    81,165.06x = 4,682,100,776.21
  5. Step 5: Solve for x
    x = 4,682,100,776.21/81,165.06
  6. Step 6: Final answer
    x = 57,686.16

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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.