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Finding the Fourth Proportional to 86,471.70, 119,310.60 and 52,479.42

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Solution

The fourth proportional to 86,471.70, 119,310.60 and 52,479.42 is: 72,409.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,471.70 : 119,310.60 = 52,479.42 : x
  2. Step 2: Convert to fraction form
    86,471.70/119,310.60 = 52,479.42/x
  3. Step 3: Cross multiply
    86,471.70x = 119,310.60 × 52,479.42
  4. Step 4: Simplify right side
    86,471.70x = 6,261,351,087.85
  5. Step 5: Solve for x
    x = 6,261,351,087.85/86,471.70
  6. Step 6: Final answer
    x = 72,409.25

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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.