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Finding the Fourth Proportional to 62,213.70, 85,823.70 and 39,515.67

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Solution

The fourth proportional to 62,213.70, 85,823.70 and 39,515.67 is: 54,511.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,213.70 : 85,823.70 = 39,515.67 : x
  2. Step 2: Convert to fraction form
    62,213.70/85,823.70 = 39,515.67/x
  3. Step 3: Cross multiply
    62,213.70x = 85,823.70 × 39,515.67
  4. Step 4: Simplify right side
    62,213.70x = 3,391,381,007.38
  5. Step 5: Solve for x
    x = 3,391,381,007.38/62,213.70
  6. Step 6: Final answer
    x = 54,511.80

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1.5x scale

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.