Home / 89,919.19-124,138.20-54,118

Finding the Fourth Proportional to 89,919.19, 124,138.20 and 54,118

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Solution

The fourth proportional to 89,919.19, 124,138.20 and 54,118 is: 74,712.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,919.19 : 124,138.20 = 54,118 : x
  2. Step 2: Convert to fraction form
    89,919.19/124,138.20 = 54,118/x
  3. Step 3: Cross multiply
    89,919.19x = 124,138.20 × 54,118
  4. Step 4: Simplify right side
    89,919.19x = 6,718,111,107.60
  5. Step 5: Solve for x
    x = 6,718,111,107.60/89,919.19
  6. Step 6: Final answer
    x = 74,712.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.