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Finding the Fourth Proportional to 86,930.88, 119,958.72 and 49,202.88

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Solution

The fourth proportional to 86,930.88, 119,958.72 and 49,202.88 is: 67,896.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,930.88 : 119,958.72 = 49,202.88 : x
  2. Step 2: Convert to fraction form
    86,930.88/119,958.72 = 49,202.88/x
  3. Step 3: Cross multiply
    86,930.88x = 119,958.72 × 49,202.88
  4. Step 4: Simplify right side
    86,930.88x = 5,902,314,505.11
  5. Step 5: Solve for x
    x = 5,902,314,505.11/86,930.88
  6. Step 6: Final answer
    x = 67,896.64

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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.