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Finding the Fourth Proportional to 49,480.36, 74,223.90 and 19,898.20

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Solution

The fourth proportional to 49,480.36, 74,223.90 and 19,898.20 is: 29,848.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,480.36 : 74,223.90 = 19,898.20 : x
  2. Step 2: Convert to fraction form
    49,480.36/74,223.90 = 19,898.20/x
  3. Step 3: Cross multiply
    49,480.36x = 74,223.90 × 19,898.20
  4. Step 4: Simplify right side
    49,480.36x = 1,476,922,006.98
  5. Step 5: Solve for x
    x = 1,476,922,006.98/49,480.36
  6. Step 6: Final answer
    x = 29,848.65

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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.