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Finding the Fourth Proportional to 39,843.99, 54,866.02 and 38,959.91

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Solution

The fourth proportional to 39,843.99, 54,866.02 and 38,959.91 is: 53,648.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,843.99 : 54,866.02 = 38,959.91 : x
  2. Step 2: Convert to fraction form
    39,843.99/54,866.02 = 38,959.91/x
  3. Step 3: Cross multiply
    39,843.99x = 54,866.02 × 38,959.91
  4. Step 4: Simplify right side
    39,843.99x = 2,137,575,201.26
  5. Step 5: Solve for x
    x = 2,137,575,201.26/39,843.99
  6. Step 6: Final answer
    x = 53,648.62

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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.