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Finding the Fourth Proportional to 115,860, 159,886.80 and 62,868

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Solution

The fourth proportional to 115,860, 159,886.80 and 62,868 is: 86,757.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,860 : 159,886.80 = 62,868 : x
  2. Step 2: Convert to fraction form
    115,860/159,886.80 = 62,868/x
  3. Step 3: Cross multiply
    115,860x = 159,886.80 × 62,868
  4. Step 4: Simplify right side
    115,860x = 10,051,763,342.40
  5. Step 5: Solve for x
    x = 10,051,763,342.40/115,860
  6. Step 6: Final answer
    x = 86,757.84

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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.