Home / 78,811.91-108,759.54-43,001.15

Finding the Fourth Proportional to 78,811.91, 108,759.54 and 43,001.15

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Solution

The fourth proportional to 78,811.91, 108,759.54 and 43,001.15 is: 59,341.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,811.91 : 108,759.54 = 43,001.15 : x
  2. Step 2: Convert to fraction form
    78,811.91/108,759.54 = 43,001.15/x
  3. Step 3: Cross multiply
    78,811.91x = 108,759.54 × 43,001.15
  4. Step 4: Simplify right side
    78,811.91x = 4,676,785,293.47
  5. Step 5: Solve for x
    x = 4,676,785,293.47/78,811.91
  6. Step 6: Final answer
    x = 59,341.10

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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.