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Finding the Fourth Proportional to 60,380.78, 90,468.29 and 39,288.65

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Solution

The fourth proportional to 60,380.78, 90,468.29 and 39,288.65 is: 58,866.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,380.78 : 90,468.29 = 39,288.65 : x
  2. Step 2: Convert to fraction form
    60,380.78/90,468.29 = 39,288.65/x
  3. Step 3: Cross multiply
    60,380.78x = 90,468.29 × 39,288.65
  4. Step 4: Simplify right side
    60,380.78x = 3,554,376,627.79
  5. Step 5: Solve for x
    x = 3,554,376,627.79/60,380.78
  6. Step 6: Final answer
    x = 58,866.03

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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.