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Finding the Fourth Proportional to 66,640.47, 99,978.21 and 23,950.21

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Solution

The fourth proportional to 66,640.47, 99,978.21 and 23,950.21 is: 35,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,640.47 : 99,978.21 = 23,950.21 : x
  2. Step 2: Convert to fraction form
    66,640.47/99,978.21 = 23,950.21/x
  3. Step 3: Cross multiply
    66,640.47x = 99,978.21 × 23,950.21
  4. Step 4: Simplify right side
    66,640.47x = 2,394,499,124.92
  5. Step 5: Solve for x
    x = 2,394,499,124.92/66,640.47
  6. Step 6: Final answer
    x = 35,931.61

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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.