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Finding the Fourth Proportional to 62,211.50, 85,851.87 and 39,855.50

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Solution

The fourth proportional to 62,211.50, 85,851.87 and 39,855.50 is: 55,000.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,211.50 : 85,851.87 = 39,855.50 : x
  2. Step 2: Convert to fraction form
    62,211.50/85,851.87 = 39,855.50/x
  3. Step 3: Cross multiply
    62,211.50x = 85,851.87 × 39,855.50
  4. Step 4: Simplify right side
    62,211.50x = 3,421,669,204.79
  5. Step 5: Solve for x
    x = 3,421,669,204.79/62,211.50
  6. Step 6: Final answer
    x = 55,000.59

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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.