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Finding the Fourth Proportional to 39,996.80, 59,995.20 and 27,555.20

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Solution

The fourth proportional to 39,996.80, 59,995.20 and 27,555.20 is: 41,332.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,996.80 : 59,995.20 = 27,555.20 : x
  2. Step 2: Convert to fraction form
    39,996.80/59,995.20 = 27,555.20/x
  3. Step 3: Cross multiply
    39,996.80x = 59,995.20 × 27,555.20
  4. Step 4: Simplify right side
    39,996.80x = 1,653,179,735.04
  5. Step 5: Solve for x
    x = 1,653,179,735.04/39,996.80
  6. Step 6: Final answer
    x = 41,332.80

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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.