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Finding the Fourth Proportional to 86,436.56, 119,223.24 and 52,919.12

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Solution

The fourth proportional to 86,436.56, 119,223.24 and 52,919.12 is: 72,992.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,436.56 : 119,223.24 = 52,919.12 : x
  2. Step 2: Convert to fraction form
    86,436.56/119,223.24 = 52,919.12/x
  3. Step 3: Cross multiply
    86,436.56x = 119,223.24 × 52,919.12
  4. Step 4: Simplify right side
    86,436.56x = 6,309,188,944.35
  5. Step 5: Solve for x
    x = 6,309,188,944.35/86,436.56
  6. Step 6: Final answer
    x = 72,992.13

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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.