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Finding the Fourth Proportional to 81,622.84, 112,644.52 and 45,815.16

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Solution

The fourth proportional to 81,622.84, 112,644.52 and 45,815.16 is: 63,227.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,622.84 : 112,644.52 = 45,815.16 : x
  2. Step 2: Convert to fraction form
    81,622.84/112,644.52 = 45,815.16/x
  3. Step 3: Cross multiply
    81,622.84x = 112,644.52 × 45,815.16
  4. Step 4: Simplify right side
    81,622.84x = 5,160,826,706.92
  5. Step 5: Solve for x
    x = 5,160,826,706.92/81,622.84
  6. Step 6: Final answer
    x = 63,227.73

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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.