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Finding the Fourth Proportional to 38,404.80, 57,650.40 and 29,678.40

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Solution

The fourth proportional to 38,404.80, 57,650.40 and 29,678.40 is: 44,550.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,404.80 : 57,650.40 = 29,678.40 : x
  2. Step 2: Convert to fraction form
    38,404.80/57,650.40 = 29,678.40/x
  3. Step 3: Cross multiply
    38,404.80x = 57,650.40 × 29,678.40
  4. Step 4: Simplify right side
    38,404.80x = 1,710,971,631.36
  5. Step 5: Solve for x
    x = 1,710,971,631.36/38,404.80
  6. Step 6: Final answer
    x = 44,550.98

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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.