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Finding the Fourth Proportional to 77,321.72, 115,982.58 and 35,763.32

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Solution

The fourth proportional to 77,321.72, 115,982.58 and 35,763.32 is: 53,644.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,321.72 : 115,982.58 = 35,763.32 : x
  2. Step 2: Convert to fraction form
    77,321.72/115,982.58 = 35,763.32/x
  3. Step 3: Cross multiply
    77,321.72x = 115,982.58 × 35,763.32
  4. Step 4: Simplify right side
    77,321.72x = 4,147,922,122.97
  5. Step 5: Solve for x
    x = 4,147,922,122.97/77,321.72
  6. Step 6: Final answer
    x = 53,644.98

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Similar ratio
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1.5x scale

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.