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Finding the Fourth Proportional to 35,366.78, 48,785.82 and 21,211.40

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Solution

The fourth proportional to 35,366.78, 48,785.82 and 21,211.40 is: 29,259.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,366.78 : 48,785.82 = 21,211.40 : x
  2. Step 2: Convert to fraction form
    35,366.78/48,785.82 = 21,211.40/x
  3. Step 3: Cross multiply
    35,366.78x = 48,785.82 × 21,211.40
  4. Step 4: Simplify right side
    35,366.78x = 1,034,815,542.35
  5. Step 5: Solve for x
    x = 1,034,815,542.35/35,366.78
  6. Step 6: Final answer
    x = 29,259.54

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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.