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Finding the Fourth Proportional to 86,362.92, 129,544.38 and 49,401

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Solution

The fourth proportional to 86,362.92, 129,544.38 and 49,401 is: 74,101.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,362.92 : 129,544.38 = 49,401 : x
  2. Step 2: Convert to fraction form
    86,362.92/129,544.38 = 49,401/x
  3. Step 3: Cross multiply
    86,362.92x = 129,544.38 × 49,401
  4. Step 4: Simplify right side
    86,362.92x = 6,399,621,916.38
  5. Step 5: Solve for x
    x = 6,399,621,916.38/86,362.92
  6. Step 6: Final answer
    x = 74,101.50

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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.