Home / 78,968.75-108,977.06-43,159.19

Finding the Fourth Proportional to 78,968.75, 108,977.06 and 43,159.19

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Solution

The fourth proportional to 78,968.75, 108,977.06 and 43,159.19 is: 59,559.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,968.75 : 108,977.06 = 43,159.19 : x
  2. Step 2: Convert to fraction form
    78,968.75/108,977.06 = 43,159.19/x
  3. Step 3: Cross multiply
    78,968.75x = 108,977.06 × 43,159.19
  4. Step 4: Simplify right side
    78,968.75x = 4,703,361,201.19
  5. Step 5: Solve for x
    x = 4,703,361,201.19/78,968.75
  6. Step 6: Final answer
    x = 59,559.78

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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.