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Finding the Fourth Proportional to 85,100.65, 117,421.10 and 49,288.52

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Solution

The fourth proportional to 85,100.65, 117,421.10 and 49,288.52 is: 68,007.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,100.65 : 117,421.10 = 49,288.52 : x
  2. Step 2: Convert to fraction form
    85,100.65/117,421.10 = 49,288.52/x
  3. Step 3: Cross multiply
    85,100.65x = 117,421.10 × 49,288.52
  4. Step 4: Simplify right side
    85,100.65x = 5,787,512,235.77
  5. Step 5: Solve for x
    x = 5,787,512,235.77/85,100.65
  6. Step 6: Final answer
    x = 68,007.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.