Home / 81,360.18-122,058.68-43,919.45

Finding the Fourth Proportional to 81,360.18, 122,058.68 and 43,919.45

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Solution

The fourth proportional to 81,360.18, 122,058.68 and 43,919.45 is: 65,889.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,360.18 : 122,058.68 = 43,919.45 : x
  2. Step 2: Convert to fraction form
    81,360.18/122,058.68 = 43,919.45/x
  3. Step 3: Cross multiply
    81,360.18x = 122,058.68 × 43,919.45
  4. Step 4: Simplify right side
    81,360.18x = 5,360,750,093.33
  5. Step 5: Solve for x
    x = 5,360,750,093.33/81,360.18
  6. Step 6: Final answer
    x = 65,889.11

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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.