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Finding the Fourth Proportional to 39,874.80, 59,812.20 and 33,313.80

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Solution

The fourth proportional to 39,874.80, 59,812.20 and 33,313.80 is: 49,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874.80 : 59,812.20 = 33,313.80 : x
  2. Step 2: Convert to fraction form
    39,874.80/59,812.20 = 33,313.80/x
  3. Step 3: Cross multiply
    39,874.80x = 59,812.20 × 33,313.80
  4. Step 4: Simplify right side
    39,874.80x = 1,992,571,668.36
  5. Step 5: Solve for x
    x = 1,992,571,668.36/39,874.80
  6. Step 6: Final answer
    x = 49,970.70

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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.