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Finding the Fourth Proportional to 49,840.65, 74,788.29 and 20,250.54

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Solution

The fourth proportional to 49,840.65, 74,788.29 and 20,250.54 is: 30,386.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,840.65 : 74,788.29 = 20,250.54 : x
  2. Step 2: Convert to fraction form
    49,840.65/74,788.29 = 20,250.54/x
  3. Step 3: Cross multiply
    49,840.65x = 74,788.29 × 20,250.54
  4. Step 4: Simplify right side
    49,840.65x = 1,514,503,258.18
  5. Step 5: Solve for x
    x = 1,514,503,258.18/49,840.65
  6. Step 6: Final answer
    x = 30,386.91

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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.