Home / 78,976.13-108,986.85-43,166.39

Finding the Fourth Proportional to 78,976.13, 108,986.85 and 43,166.39

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Solution

The fourth proportional to 78,976.13, 108,986.85 and 43,166.39 is: 59,569.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,976.13 : 108,986.85 = 43,166.39 : x
  2. Step 2: Convert to fraction form
    78,976.13/108,986.85 = 43,166.39/x
  3. Step 3: Cross multiply
    78,976.13x = 108,986.85 × 43,166.39
  4. Step 4: Simplify right side
    78,976.13x = 4,704,568,327.04
  5. Step 5: Solve for x
    x = 4,704,568,327.04/78,976.13
  6. Step 6: Final answer
    x = 59,569.50

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1.5x scale

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.