Home / 85,584.28-128,288.92-29,407.56

Finding the Fourth Proportional to 85,584.28, 128,288.92 and 29,407.56

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Solution

The fourth proportional to 85,584.28, 128,288.92 and 29,407.56 is: 44,081.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,584.28 : 128,288.92 = 29,407.56 : x
  2. Step 2: Convert to fraction form
    85,584.28/128,288.92 = 29,407.56/x
  3. Step 3: Cross multiply
    85,584.28x = 128,288.92 × 29,407.56
  4. Step 4: Simplify right side
    85,584.28x = 3,772,664,112.24
  5. Step 5: Solve for x
    x = 3,772,664,112.24/85,584.28
  6. Step 6: Final answer
    x = 44,081.27

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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.