Home / 82,786.90-124,110.15-30,165.70

Finding the Fourth Proportional to 82,786.90, 124,110.15 and 30,165.70

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Solution

The fourth proportional to 82,786.90, 124,110.15 and 30,165.70 is: 45,222.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,786.90 : 124,110.15 = 30,165.70 : x
  2. Step 2: Convert to fraction form
    82,786.90/124,110.15 = 30,165.70/x
  3. Step 3: Cross multiply
    82,786.90x = 124,110.15 × 30,165.70
  4. Step 4: Simplify right side
    82,786.90x = 3,743,869,551.86
  5. Step 5: Solve for x
    x = 3,743,869,551.86/82,786.90
  6. Step 6: Final answer
    x = 45,222.97

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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.