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Finding the Fourth Proportional to 39,969.60, 59,992.80 and 34,132.80

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Solution

The fourth proportional to 39,969.60, 59,992.80 and 34,132.80 is: 51,231.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,969.60 : 59,992.80 = 34,132.80 : x
  2. Step 2: Convert to fraction form
    39,969.60/59,992.80 = 34,132.80/x
  3. Step 3: Cross multiply
    39,969.60x = 59,992.80 × 34,132.80
  4. Step 4: Simplify right side
    39,969.60x = 2,047,722,243.84
  5. Step 5: Solve for x
    x = 2,047,722,243.84/39,969.60
  6. Step 6: Final answer
    x = 51,231.99

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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.