Home / 78,766.33-108,636.10-50,474.65

Finding the Fourth Proportional to 78,766.33, 108,636.10 and 50,474.65

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Solution

The fourth proportional to 78,766.33, 108,636.10 and 50,474.65 is: 69,615.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,766.33 : 108,636.10 = 50,474.65 : x
  2. Step 2: Convert to fraction form
    78,766.33/108,636.10 = 50,474.65/x
  3. Step 3: Cross multiply
    78,766.33x = 108,636.10 × 50,474.65
  4. Step 4: Simplify right side
    78,766.33x = 5,483,369,124.87
  5. Step 5: Solve for x
    x = 5,483,369,124.87/78,766.33
  6. Step 6: Final answer
    x = 69,615.65

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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.