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Finding the Fourth Proportional to 86,222.82, 118,973.78 and 48,489.78

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Solution

The fourth proportional to 86,222.82, 118,973.78 and 48,489.78 is: 66,908.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,222.82 : 118,973.78 = 48,489.78 : x
  2. Step 2: Convert to fraction form
    86,222.82/118,973.78 = 48,489.78/x
  3. Step 3: Cross multiply
    86,222.82x = 118,973.78 × 48,489.78
  4. Step 4: Simplify right side
    86,222.82x = 5,769,012,175.52
  5. Step 5: Solve for x
    x = 5,769,012,175.52/86,222.82
  6. Step 6: Final answer
    x = 66,908.18

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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.