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Finding the Fourth Proportional to 85,139.93, 117,480.84 and 49,323.35

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Solution

The fourth proportional to 85,139.93, 117,480.84 and 49,323.35 is: 68,059.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,139.93 : 117,480.84 = 49,323.35 : x
  2. Step 2: Convert to fraction form
    85,139.93/117,480.84 = 49,323.35/x
  3. Step 3: Cross multiply
    85,139.93x = 117,480.84 × 49,323.35
  4. Step 4: Simplify right side
    85,139.93x = 5,794,548,589.61
  5. Step 5: Solve for x
    x = 5,794,548,589.61/85,139.93
  6. Step 6: Final answer
    x = 68,059.12

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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.