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Finding the Fourth Proportional to 69,728.46, 104,581.68 and 57,957.84

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Solution

The fourth proportional to 69,728.46, 104,581.68 and 57,957.84 is: 86,927.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,728.46 : 104,581.68 = 57,957.84 : x
  2. Step 2: Convert to fraction form
    69,728.46/104,581.68 = 57,957.84/x
  3. Step 3: Cross multiply
    69,728.46x = 104,581.68 × 57,957.84
  4. Step 4: Simplify right side
    69,728.46x = 6,061,328,276.37
  5. Step 5: Solve for x
    x = 6,061,328,276.37/69,728.46
  6. Step 6: Final answer
    x = 86,927.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.