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Finding the Fourth Proportional to 29,073.80, 43,610.70 and 20,779.40

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Solution

The fourth proportional to 29,073.80, 43,610.70 and 20,779.40 is: 31,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,073.80 : 43,610.70 = 20,779.40 : x
  2. Step 2: Convert to fraction form
    29,073.80/43,610.70 = 20,779.40/x
  3. Step 3: Cross multiply
    29,073.80x = 43,610.70 × 20,779.40
  4. Step 4: Simplify right side
    29,073.80x = 906,204,179.58
  5. Step 5: Solve for x
    x = 906,204,179.58/29,073.80
  6. Step 6: Final answer
    x = 31,169.10

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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.