Home / 78,505.22-108,336.15-42,694.46

Finding the Fourth Proportional to 78,505.22, 108,336.15 and 42,694.46

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Solution

The fourth proportional to 78,505.22, 108,336.15 and 42,694.46 is: 58,917.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,505.22 : 108,336.15 = 42,694.46 : x
  2. Step 2: Convert to fraction form
    78,505.22/108,336.15 = 42,694.46/x
  3. Step 3: Cross multiply
    78,505.22x = 108,336.15 × 42,694.46
  4. Step 4: Simplify right side
    78,505.22x = 4,625,352,881.05
  5. Step 5: Solve for x
    x = 4,625,352,881.05/78,505.22
  6. Step 6: Final answer
    x = 58,917.78

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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.