Home / 105,732.72-145,912.62-57,982.92

Finding the Fourth Proportional to 105,732.72, 145,912.62 and 57,982.92

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Solution

The fourth proportional to 105,732.72, 145,912.62 and 57,982.92 is: 80,017.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,732.72 : 145,912.62 = 57,982.92 : x
  2. Step 2: Convert to fraction form
    105,732.72/145,912.62 = 57,982.92/x
  3. Step 3: Cross multiply
    105,732.72x = 145,912.62 × 57,982.92
  4. Step 4: Simplify right side
    105,732.72x = 8,460,439,442.71
  5. Step 5: Solve for x
    x = 8,460,439,442.71/105,732.72
  6. Step 6: Final answer
    x = 80,017.23

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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.