Home / 89,680.10-123,749.38-55,219.36

Finding the Fourth Proportional to 89,680.10, 123,749.38 and 55,219.36

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Solution

The fourth proportional to 89,680.10, 123,749.38 and 55,219.36 is: 76,197.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,680.10 : 123,749.38 = 55,219.36 : x
  2. Step 2: Convert to fraction form
    89,680.10/123,749.38 = 55,219.36/x
  3. Step 3: Cross multiply
    89,680.10x = 123,749.38 × 55,219.36
  4. Step 4: Simplify right side
    89,680.10x = 6,833,361,564.00
  5. Step 5: Solve for x
    x = 6,833,361,564.00/89,680.10
  6. Step 6: Final answer
    x = 76,197.08

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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.