Home / 84,890.06-127,255.94-28,690.87

Finding the Fourth Proportional to 84,890.06, 127,255.94 and 28,690.87

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Solution

The fourth proportional to 84,890.06, 127,255.94 and 28,690.87 is: 43,009.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,890.06 : 127,255.94 = 28,690.87 : x
  2. Step 2: Convert to fraction form
    84,890.06/127,255.94 = 28,690.87/x
  3. Step 3: Cross multiply
    84,890.06x = 127,255.94 × 28,690.87
  4. Step 4: Simplify right side
    84,890.06x = 3,651,083,631.27
  5. Step 5: Solve for x
    x = 3,651,083,631.27/84,890.06
  6. Step 6: Final answer
    x = 43,009.55

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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.