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Finding the Fourth Proportional to 62,217.50, 85,860.16 and 39,861.50

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Solution

The fourth proportional to 62,217.50, 85,860.16 and 39,861.50 is: 55,008.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,217.50 : 85,860.16 = 39,861.50 : x
  2. Step 2: Convert to fraction form
    62,217.50/85,860.16 = 39,861.50/x
  3. Step 3: Cross multiply
    62,217.50x = 85,860.16 × 39,861.50
  4. Step 4: Simplify right side
    62,217.50x = 3,422,514,767.84
  5. Step 5: Solve for x
    x = 3,422,514,767.84/62,217.50
  6. Step 6: Final answer
    x = 55,008.88

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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.