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Finding the Fourth Proportional to 86,118.75, 118,844.48 and 48,393

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Solution

The fourth proportional to 86,118.75, 118,844.48 and 48,393 is: 66,782.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,118.75 : 118,844.48 = 48,393 : x
  2. Step 2: Convert to fraction form
    86,118.75/118,844.48 = 48,393/x
  3. Step 3: Cross multiply
    86,118.75x = 118,844.48 × 48,393
  4. Step 4: Simplify right side
    86,118.75x = 5,751,241,041.62
  5. Step 5: Solve for x
    x = 5,751,241,041.62/86,118.75
  6. Step 6: Final answer
    x = 66,782.68

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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.