Home / 105,729.34-145,908.36-57,982.27

Finding the Fourth Proportional to 105,729.34, 145,908.36 and 57,982.27

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Solution

The fourth proportional to 105,729.34, 145,908.36 and 57,982.27 is: 80,016.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,729.34 : 145,908.36 = 57,982.27 : x
  2. Step 2: Convert to fraction form
    105,729.34/145,908.36 = 57,982.27/x
  3. Step 3: Cross multiply
    105,729.34x = 145,908.36 × 57,982.27
  4. Step 4: Simplify right side
    105,729.34x = 8,460,098,506.98
  5. Step 5: Solve for x
    x = 8,460,098,506.98/105,729.34
  6. Step 6: Final answer
    x = 80,016.56

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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.