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Finding the Fourth Proportional to 86,662.40, 129,910.55 and 36,673.71

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Solution

The fourth proportional to 86,662.40, 129,910.55 and 36,673.71 is: 54,975.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,662.40 : 129,910.55 = 36,673.71 : x
  2. Step 2: Convert to fraction form
    86,662.40/129,910.55 = 36,673.71/x
  3. Step 3: Cross multiply
    86,662.40x = 129,910.55 × 36,673.71
  4. Step 4: Simplify right side
    86,662.40x = 4,764,301,653.27
  5. Step 5: Solve for x
    x = 4,764,301,653.27/86,662.40
  6. Step 6: Final answer
    x = 54,975.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.