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Finding the Fourth Proportional to 71,876.77, 99,189.83 and 41,679.63

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Solution

The fourth proportional to 71,876.77, 99,189.83 and 41,679.63 is: 57,517.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,876.77 : 99,189.83 = 41,679.63 : x
  2. Step 2: Convert to fraction form
    71,876.77/99,189.83 = 41,679.63/x
  3. Step 3: Cross multiply
    71,876.77x = 99,189.83 × 41,679.63
  4. Step 4: Simplify right side
    71,876.77x = 4,134,195,518.36
  5. Step 5: Solve for x
    x = 4,134,195,518.36/71,876.77
  6. Step 6: Final answer
    x = 57,517.83

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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.