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Finding the Fourth Proportional to 39,951.70, 59,911.97 and 14,978.12

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Solution

The fourth proportional to 39,951.70, 59,911.97 and 14,978.12 is: 22,461.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,951.70 : 59,911.97 = 14,978.12 : x
  2. Step 2: Convert to fraction form
    39,951.70/59,911.97 = 14,978.12/x
  3. Step 3: Cross multiply
    39,951.70x = 59,911.97 × 14,978.12
  4. Step 4: Simplify right side
    39,951.70x = 897,368,376.54
  5. Step 5: Solve for x
    x = 897,368,376.54/39,951.70
  6. Step 6: Final answer
    x = 22,461.33

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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.