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Finding the Fourth Proportional to 115,678, 159,635.88 and 62,686

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Solution

The fourth proportional to 115,678, 159,635.88 and 62,686 is: 86,506.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,678 : 159,635.88 = 62,686 : x
  2. Step 2: Convert to fraction form
    115,678/159,635.88 = 62,686/x
  3. Step 3: Cross multiply
    115,678x = 159,635.88 × 62,686
  4. Step 4: Simplify right side
    115,678x = 10,006,934,773.68
  5. Step 5: Solve for x
    x = 10,006,934,773.68/115,678
  6. Step 6: Final answer
    x = 86,506.81

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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.