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Finding the Fourth Proportional to 86,993.72, 130,511.01 and 27,019.13

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Solution

The fourth proportional to 86,993.72, 130,511.01 and 27,019.13 is: 40,535.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,993.72 : 130,511.01 = 27,019.13 : x
  2. Step 2: Convert to fraction form
    86,993.72/130,511.01 = 27,019.13/x
  3. Step 3: Cross multiply
    86,993.72x = 130,511.01 × 27,019.13
  4. Step 4: Simplify right side
    86,993.72x = 3,526,293,945.62
  5. Step 5: Solve for x
    x = 3,526,293,945.62/86,993.72
  6. Step 6: Final answer
    x = 40,535.04

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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.