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Finding the Fourth Proportional to 79,999.12, 110,335.80 and 74,633.68

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Solution

The fourth proportional to 79,999.12, 110,335.80 and 74,633.68 is: 102,935.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,999.12 : 110,335.80 = 74,633.68 : x
  2. Step 2: Convert to fraction form
    79,999.12/110,335.80 = 74,633.68/x
  3. Step 3: Cross multiply
    79,999.12x = 110,335.80 × 74,633.68
  4. Step 4: Simplify right side
    79,999.12x = 8,234,766,789.74
  5. Step 5: Solve for x
    x = 8,234,766,789.74/79,999.12
  6. Step 6: Final answer
    x = 102,935.72

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1.5x scale

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.