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Finding the Fourth Proportional to 86,119.56, 118,855.92 and 48,393.78

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Solution

The fourth proportional to 86,119.56, 118,855.92 and 48,393.78 is: 66,789.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,119.56 : 118,855.92 = 48,393.78 : x
  2. Step 2: Convert to fraction form
    86,119.56/118,855.92 = 48,393.78/x
  3. Step 3: Cross multiply
    86,119.56x = 118,855.92 × 48,393.78
  4. Step 4: Simplify right side
    86,119.56x = 5,751,887,244.18
  5. Step 5: Solve for x
    x = 5,751,887,244.18/86,119.56
  6. Step 6: Final answer
    x = 66,789.56

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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.