Home / 85,099.17-127,668-28,172.97

Finding the Fourth Proportional to 85,099.17, 127,668 and 28,172.97

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Solution

The fourth proportional to 85,099.17, 127,668 and 28,172.97 is: 42,265.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,099.17 : 127,668 = 28,172.97 : x
  2. Step 2: Convert to fraction form
    85,099.17/127,668 = 28,172.97/x
  3. Step 3: Cross multiply
    85,099.17x = 127,668 × 28,172.97
  4. Step 4: Simplify right side
    85,099.17x = 3,596,786,733.96
  5. Step 5: Solve for x
    x = 3,596,786,733.96/85,099.17
  6. Step 6: Final answer
    x = 42,265.83

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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.