Home / 78,908.10-108,889.07-43,091.11

Finding the Fourth Proportional to 78,908.10, 108,889.07 and 43,091.11

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Solution

The fourth proportional to 78,908.10, 108,889.07 and 43,091.11 is: 59,463.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,908.10 : 108,889.07 = 43,091.11 : x
  2. Step 2: Convert to fraction form
    78,908.10/108,889.07 = 43,091.11/x
  3. Step 3: Cross multiply
    78,908.10x = 108,889.07 × 43,091.11
  4. Step 4: Simplify right side
    78,908.10x = 4,692,150,893.17
  5. Step 5: Solve for x
    x = 4,692,150,893.17/78,908.10
  6. Step 6: Final answer
    x = 59,463.49

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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.