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Finding the Fourth Proportional to 81,480.63, 112,433.36 and 45,662.97

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Solution

The fourth proportional to 81,480.63, 112,433.36 and 45,662.97 is: 63,009.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,480.63 : 112,433.36 = 45,662.97 : x
  2. Step 2: Convert to fraction form
    81,480.63/112,433.36 = 45,662.97/x
  3. Step 3: Cross multiply
    81,480.63x = 112,433.36 × 45,662.97
  4. Step 4: Simplify right side
    81,480.63x = 5,134,040,916.36
  5. Step 5: Solve for x
    x = 5,134,040,916.36/81,480.63
  6. Step 6: Final answer
    x = 63,009.34

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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.