Home / 105,446.49-145,517.76-57,704.28

Finding the Fourth Proportional to 105,446.49, 145,517.76 and 57,704.28

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Solution

The fourth proportional to 105,446.49, 145,517.76 and 57,704.28 is: 79,632.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,446.49 : 145,517.76 = 57,704.28 : x
  2. Step 2: Convert to fraction form
    105,446.49/145,517.76 = 57,704.28/x
  3. Step 3: Cross multiply
    105,446.49x = 145,517.76 × 57,704.28
  4. Step 4: Simplify right side
    105,446.49x = 8,396,997,568.01
  5. Step 5: Solve for x
    x = 8,396,997,568.01/105,446.49
  6. Step 6: Final answer
    x = 79,632.78

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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.