Home / 85,141.10-127,722.25-28,976.89

Finding the Fourth Proportional to 85,141.10, 127,722.25 and 28,976.89

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Solution

The fourth proportional to 85,141.10, 127,722.25 and 28,976.89 is: 43,468.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,141.10 : 127,722.25 = 28,976.89 : x
  2. Step 2: Convert to fraction form
    85,141.10/127,722.25 = 28,976.89/x
  3. Step 3: Cross multiply
    85,141.10x = 127,722.25 × 28,976.89
  4. Step 4: Simplify right side
    85,141.10x = 3,700,993,784.68
  5. Step 5: Solve for x
    x = 3,700,993,784.68/85,141.10
  6. Step 6: Final answer
    x = 43,468.95

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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.