Home / 40,688.61-61,034.94-12,627.78

Finding the Fourth Proportional to 40,688.61, 61,034.94 and 12,627.78

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Solution

The fourth proportional to 40,688.61, 61,034.94 and 12,627.78 is: 18,942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,688.61 : 61,034.94 = 12,627.78 : x
  2. Step 2: Convert to fraction form
    40,688.61/61,034.94 = 12,627.78/x
  3. Step 3: Cross multiply
    40,688.61x = 61,034.94 × 12,627.78
  4. Step 4: Simplify right side
    40,688.61x = 770,735,794.63
  5. Step 5: Solve for x
    x = 770,735,794.63/40,688.61
  6. Step 6: Final answer
    x = 18,942.30

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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.