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Finding the Fourth Proportional to 39,400.70, 59,101.05 and 19,717.70

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Solution

The fourth proportional to 39,400.70, 59,101.05 and 19,717.70 is: 29,576.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,400.70 : 59,101.05 = 19,717.70 : x
  2. Step 2: Convert to fraction form
    39,400.70/59,101.05 = 19,717.70/x
  3. Step 3: Cross multiply
    39,400.70x = 59,101.05 × 19,717.70
  4. Step 4: Simplify right side
    39,400.70x = 1,165,336,773.59
  5. Step 5: Solve for x
    x = 1,165,336,773.59/39,400.70
  6. Step 6: Final answer
    x = 29,576.55

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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.