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Finding the Fourth Proportional to 49,487.40, 74,215.74 and 19,889.64

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Solution

The fourth proportional to 49,487.40, 74,215.74 and 19,889.64 is: 29,828.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,487.40 : 74,215.74 = 19,889.64 : x
  2. Step 2: Convert to fraction form
    49,487.40/74,215.74 = 19,889.64/x
  3. Step 3: Cross multiply
    49,487.40x = 74,215.74 × 19,889.64
  4. Step 4: Simplify right side
    49,487.40x = 1,476,124,350.93
  5. Step 5: Solve for x
    x = 1,476,124,350.93/49,487.40
  6. Step 6: Final answer
    x = 29,828.29

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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.