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Finding the Fourth Proportional to 61,128.78, 84,358.04 and 35,652.84

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Solution

The fourth proportional to 61,128.78, 84,358.04 and 35,652.84 is: 49,201.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,128.78 : 84,358.04 = 35,652.84 : x
  2. Step 2: Convert to fraction form
    61,128.78/84,358.04 = 35,652.84/x
  3. Step 3: Cross multiply
    61,128.78x = 84,358.04 × 35,652.84
  4. Step 4: Simplify right side
    61,128.78x = 3,007,603,702.83
  5. Step 5: Solve for x
    x = 3,007,603,702.83/61,128.78
  6. Step 6: Final answer
    x = 49,201.11

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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.