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Finding the Fourth Proportional to 84,886.81, 127,251.07 and 28,687.62

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Solution

The fourth proportional to 84,886.81, 127,251.07 and 28,687.62 is: 43,004.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,886.81 : 127,251.07 = 28,687.62 : x
  2. Step 2: Convert to fraction form
    84,886.81/127,251.07 = 28,687.62/x
  3. Step 3: Cross multiply
    84,886.81x = 127,251.07 × 28,687.62
  4. Step 4: Simplify right side
    84,886.81x = 3,650,530,197.32
  5. Step 5: Solve for x
    x = 3,650,530,197.32/84,886.81
  6. Step 6: Final answer
    x = 43,004.68

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1.5x scale

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.