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Finding the Fourth Proportional to 56,138.94, 84,269.07 and 49,938.66

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Solution

The fourth proportional to 56,138.94, 84,269.07 and 49,938.66 is: 74,961.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,138.94 : 84,269.07 = 49,938.66 : x
  2. Step 2: Convert to fraction form
    56,138.94/84,269.07 = 49,938.66/x
  3. Step 3: Cross multiply
    56,138.94x = 84,269.07 × 49,938.66
  4. Step 4: Simplify right side
    56,138.94x = 4,208,284,435.25
  5. Step 5: Solve for x
    x = 4,208,284,435.25/56,138.94
  6. Step 6: Final answer
    x = 74,961.95

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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.