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Finding the Fourth Proportional to 29,039.78, 40,078.80 and 17,103.02

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Solution

The fourth proportional to 29,039.78, 40,078.80 and 17,103.02 is: 23,604.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,039.78 : 40,078.80 = 17,103.02 : x
  2. Step 2: Convert to fraction form
    29,039.78/40,078.80 = 17,103.02/x
  3. Step 3: Cross multiply
    29,039.78x = 40,078.80 × 17,103.02
  4. Step 4: Simplify right side
    29,039.78x = 685,468,317.58
  5. Step 5: Solve for x
    x = 685,468,317.58/29,039.78
  6. Step 6: Final answer
    x = 23,604.46

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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.