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Finding the Fourth Proportional to 62,861.78, 86,790.21 and 39,023.48

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Solution

The fourth proportional to 62,861.78, 86,790.21 and 39,023.48 is: 53,877.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,861.78 : 86,790.21 = 39,023.48 : x
  2. Step 2: Convert to fraction form
    62,861.78/86,790.21 = 39,023.48/x
  3. Step 3: Cross multiply
    62,861.78x = 86,790.21 × 39,023.48
  4. Step 4: Simplify right side
    62,861.78x = 3,386,856,024.13
  5. Step 5: Solve for x
    x = 3,386,856,024.13/62,861.78
  6. Step 6: Final answer
    x = 53,877.83

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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.