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Finding the Fourth Proportional to 70,694.58, 106,042.71 and 18,102.66

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Solution

The fourth proportional to 70,694.58, 106,042.71 and 18,102.66 is: 27,154.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,694.58 : 106,042.71 = 18,102.66 : x
  2. Step 2: Convert to fraction form
    70,694.58/106,042.71 = 18,102.66/x
  3. Step 3: Cross multiply
    70,694.58x = 106,042.71 × 18,102.66
  4. Step 4: Simplify right side
    70,694.58x = 1,919,655,124.61
  5. Step 5: Solve for x
    x = 1,919,655,124.61/70,694.58
  6. Step 6: Final answer
    x = 27,154.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.