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Finding the Fourth Proportional to 29,234.80, 43,779.30 and 19,320.40

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Solution

The fourth proportional to 29,234.80, 43,779.30 and 19,320.40 is: 28,932.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,234.80 : 43,779.30 = 19,320.40 : x
  2. Step 2: Convert to fraction form
    29,234.80/43,779.30 = 19,320.40/x
  3. Step 3: Cross multiply
    29,234.80x = 43,779.30 × 19,320.40
  4. Step 4: Simplify right side
    29,234.80x = 845,833,587.72
  5. Step 5: Solve for x
    x = 845,833,587.72/29,234.80
  6. Step 6: Final answer
    x = 28,932.42

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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.