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Finding the Fourth Proportional to 86,481.60, 119,329.20 and 48,755.80

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Solution

The fourth proportional to 86,481.60, 119,329.20 and 48,755.80 is: 67,274.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,481.60 : 119,329.20 = 48,755.80 : x
  2. Step 2: Convert to fraction form
    86,481.60/119,329.20 = 48,755.80/x
  3. Step 3: Cross multiply
    86,481.60x = 119,329.20 × 48,755.80
  4. Step 4: Simplify right side
    86,481.60x = 5,817,990,609.36
  5. Step 5: Solve for x
    x = 5,817,990,609.36/86,481.60
  6. Step 6: Final answer
    x = 67,274.32

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1.5x scale

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.