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Finding the Fourth Proportional to 61,728.57, 85,186.02 and 33,434.87

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Solution

The fourth proportional to 61,728.57, 85,186.02 and 33,434.87 is: 46,140.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,728.57 : 85,186.02 = 33,434.87 : x
  2. Step 2: Convert to fraction form
    61,728.57/85,186.02 = 33,434.87/x
  3. Step 3: Cross multiply
    61,728.57x = 85,186.02 × 33,434.87
  4. Step 4: Simplify right side
    61,728.57x = 2,848,183,078.59
  5. Step 5: Solve for x
    x = 2,848,183,078.59/61,728.57
  6. Step 6: Final answer
    x = 46,140.44

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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.