Home / 76,832.83-105,989.78-51,331.04

Finding the Fourth Proportional to 76,832.83, 105,989.78 and 51,331.04

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Solution

The fourth proportional to 76,832.83, 105,989.78 and 51,331.04 is: 70,810.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,832.83 : 105,989.78 = 51,331.04 : x
  2. Step 2: Convert to fraction form
    76,832.83/105,989.78 = 51,331.04/x
  3. Step 3: Cross multiply
    76,832.83x = 105,989.78 × 51,331.04
  4. Step 4: Simplify right side
    76,832.83x = 5,440,565,380.12
  5. Step 5: Solve for x
    x = 5,440,565,380.12/76,832.83
  6. Step 6: Final answer
    x = 70,810.43

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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.