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Finding the Fourth Proportional to 81,963.89, 113,120.94 and 46,160.90

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Solution

The fourth proportional to 81,963.89, 113,120.94 and 46,160.90 is: 63,708.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,963.89 : 113,120.94 = 46,160.90 : x
  2. Step 2: Convert to fraction form
    81,963.89/113,120.94 = 46,160.90/x
  3. Step 3: Cross multiply
    81,963.89x = 113,120.94 × 46,160.90
  4. Step 4: Simplify right side
    81,963.89x = 5,221,763,833.64
  5. Step 5: Solve for x
    x = 5,221,763,833.64/81,963.89
  6. Step 6: Final answer
    x = 63,708.11

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1.5x scale

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.