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Finding the Fourth Proportional to 86,502.66, 119,196.56 and 63,805.70

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Solution

The fourth proportional to 86,502.66, 119,196.56 and 63,805.70 is: 87,921.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,502.66 : 119,196.56 = 63,805.70 : x
  2. Step 2: Convert to fraction form
    86,502.66/119,196.56 = 63,805.70/x
  3. Step 3: Cross multiply
    86,502.66x = 119,196.56 × 63,805.70
  4. Step 4: Simplify right side
    86,502.66x = 7,605,419,948.39
  5. Step 5: Solve for x
    x = 7,605,419,948.39/86,502.66
  6. Step 6: Final answer
    x = 87,921.23

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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.