Home / 78,918.56-108,907.20-43,108.16

Finding the Fourth Proportional to 78,918.56, 108,907.20 and 43,108.16

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Solution

The fourth proportional to 78,918.56, 108,907.20 and 43,108.16 is: 59,489.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918.56 : 108,907.20 = 43,108.16 : x
  2. Step 2: Convert to fraction form
    78,918.56/108,907.20 = 43,108.16/x
  3. Step 3: Cross multiply
    78,918.56x = 108,907.20 × 43,108.16
  4. Step 4: Simplify right side
    78,918.56x = 4,694,789,002.75
  5. Step 5: Solve for x
    x = 4,694,789,002.75/78,918.56
  6. Step 6: Final answer
    x = 59,489.04

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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.