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Finding the Fourth Proportional to 128,567.52, 192,902.04 and 39,827.95

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Solution

The fourth proportional to 128,567.52, 192,902.04 and 39,827.95 is: 59,757.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,567.52 : 192,902.04 = 39,827.95 : x
  2. Step 2: Convert to fraction form
    128,567.52/192,902.04 = 39,827.95/x
  3. Step 3: Cross multiply
    128,567.52x = 192,902.04 × 39,827.95
  4. Step 4: Simplify right side
    128,567.52x = 7,682,892,321.76
  5. Step 5: Solve for x
    x = 7,682,892,321.76/128,567.52
  6. Step 6: Final answer
    x = 59,757.65

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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.