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Finding the Fourth Proportional to 61,299.72, 91,912.50 and 39,968.25

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Solution

The fourth proportional to 61,299.72, 91,912.50 and 39,968.25 is: 59,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,299.72 : 91,912.50 = 39,968.25 : x
  2. Step 2: Convert to fraction form
    61,299.72/91,912.50 = 39,968.25/x
  3. Step 3: Cross multiply
    61,299.72x = 91,912.50 × 39,968.25
  4. Step 4: Simplify right side
    61,299.72x = 3,673,581,778.13
  5. Step 5: Solve for x
    x = 3,673,581,778.13/61,299.72
  6. Step 6: Final answer
    x = 59,928.20

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1.5x scale

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.