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Finding the Fourth Proportional to 61,239, 84,516.30 and 38,883

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Solution

The fourth proportional to 61,239, 84,516.30 and 38,883 is: 53,662.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,239 : 84,516.30 = 38,883 : x
  2. Step 2: Convert to fraction form
    61,239/84,516.30 = 38,883/x
  3. Step 3: Cross multiply
    61,239x = 84,516.30 × 38,883
  4. Step 4: Simplify right side
    61,239x = 3,286,247,292.90
  5. Step 5: Solve for x
    x = 3,286,247,292.90/61,239
  6. Step 6: Final answer
    x = 53,662.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.