Home / 78,708.92-108,617.05-42,899.22

Finding the Fourth Proportional to 78,708.92, 108,617.05 and 42,899.22

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Solution

The fourth proportional to 78,708.92, 108,617.05 and 42,899.22 is: 59,200.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,708.92 : 108,617.05 = 42,899.22 : x
  2. Step 2: Convert to fraction form
    78,708.92/108,617.05 = 42,899.22/x
  3. Step 3: Cross multiply
    78,708.92x = 108,617.05 × 42,899.22
  4. Step 4: Simplify right side
    78,708.92x = 4,659,586,777.33
  5. Step 5: Solve for x
    x = 4,659,586,777.33/78,708.92
  6. Step 6: Final answer
    x = 59,200.24

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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.