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Finding the Fourth Proportional to 86,653.29, 129,924.29 and 36,087.38

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Solution

The fourth proportional to 86,653.29, 129,924.29 and 36,087.38 is: 54,107.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,653.29 : 129,924.29 = 36,087.38 : x
  2. Step 2: Convert to fraction form
    86,653.29/129,924.29 = 36,087.38/x
  3. Step 3: Cross multiply
    86,653.29x = 129,924.29 × 36,087.38
  4. Step 4: Simplify right side
    86,653.29x = 4,688,626,394.40
  5. Step 5: Solve for x
    x = 4,688,626,394.40/86,653.29
  6. Step 6: Final answer
    x = 54,107.89

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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.