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Finding the Fourth Proportional to 81,453.97, 112,406.32 and 49,622.88

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Solution

The fourth proportional to 81,453.97, 112,406.32 and 49,622.88 is: 68,479.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,453.97 : 112,406.32 = 49,622.88 : x
  2. Step 2: Convert to fraction form
    81,453.97/112,406.32 = 49,622.88/x
  3. Step 3: Cross multiply
    81,453.97x = 112,406.32 × 49,622.88
  4. Step 4: Simplify right side
    81,453.97x = 5,577,925,328.60
  5. Step 5: Solve for x
    x = 5,577,925,328.60/81,453.97
  6. Step 6: Final answer
    x = 68,479.48

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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.