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Finding the Fourth Proportional to 85,208.59, 117,587.99 and 49,419.42

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Solution

The fourth proportional to 85,208.59, 117,587.99 and 49,419.42 is: 68,198.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,208.59 : 117,587.99 = 49,419.42 : x
  2. Step 2: Convert to fraction form
    85,208.59/117,587.99 = 49,419.42/x
  3. Step 3: Cross multiply
    85,208.59x = 117,587.99 × 49,419.42
  4. Step 4: Simplify right side
    85,208.59x = 5,811,129,669.38
  5. Step 5: Solve for x
    x = 5,811,129,669.38/85,208.59
  6. Step 6: Final answer
    x = 68,198.87

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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.