Home / 78,449,414.29-108,256,940.80-42,686,002.73

Finding the Fourth Proportional to 78,449,414.29, 108,256,940.80 and 42,686,002.73

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Solution

The fourth proportional to 78,449,414.29, 108,256,940.80 and 42,686,002.73 is: 58,904,914.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,449,414.29 : 108,256,940.80 = 42,686,002.73 : x
  2. Step 2: Convert to fraction form
    78,449,414.29/108,256,940.80 = 42,686,002.73/x
  3. Step 3: Cross multiply
    78,449,414.29x = 108,256,940.80 × 42,686,002.73
  4. Step 4: Simplify right side
    78,449,414.29x = 4,621,056,070,694,176
  5. Step 5: Solve for x
    x = 4,621,056,070,694,176/78,449,414.29
  6. Step 6: Final answer
    x = 58,904,914.88

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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.