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Finding the Fourth Proportional to 85,882.62, 128,823.93 and 26,722.02

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Solution

The fourth proportional to 85,882.62, 128,823.93 and 26,722.02 is: 40,083.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,882.62 : 128,823.93 = 26,722.02 : x
  2. Step 2: Convert to fraction form
    85,882.62/128,823.93 = 26,722.02/x
  3. Step 3: Cross multiply
    85,882.62x = 128,823.93 × 26,722.02
  4. Step 4: Simplify right side
    85,882.62x = 3,442,435,633.94
  5. Step 5: Solve for x
    x = 3,442,435,633.94/85,882.62
  6. Step 6: Final answer
    x = 40,083.03

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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.