Home / 81,976.81-123,000.98-28,707.02

Finding the Fourth Proportional to 81,976.81, 123,000.98 and 28,707.02

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Solution

The fourth proportional to 81,976.81, 123,000.98 and 28,707.02 is: 43,073.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,976.81 : 123,000.98 = 28,707.02 : x
  2. Step 2: Convert to fraction form
    81,976.81/123,000.98 = 28,707.02/x
  3. Step 3: Cross multiply
    81,976.81x = 123,000.98 × 28,707.02
  4. Step 4: Simplify right side
    81,976.81x = 3,530,991,141.84
  5. Step 5: Solve for x
    x = 3,530,991,141.84/81,976.81
  6. Step 6: Final answer
    x = 43,073.05

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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.