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Finding the Fourth Proportional to 66,876.05, 100,305.88 and 38,811.38

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Solution

The fourth proportional to 66,876.05, 100,305.88 and 38,811.38 is: 58,212.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,876.05 : 100,305.88 = 38,811.38 : x
  2. Step 2: Convert to fraction form
    66,876.05/100,305.88 = 38,811.38/x
  3. Step 3: Cross multiply
    66,876.05x = 100,305.88 × 38,811.38
  4. Step 4: Simplify right side
    66,876.05x = 3,893,009,026.36
  5. Step 5: Solve for x
    x = 3,893,009,026.36/66,876.05
  6. Step 6: Final answer
    x = 58,212.30

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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.