Home / 81,040.43-111,701.95-54,173.14

Finding the Fourth Proportional to 81,040.43, 111,701.95 and 54,173.14

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Solution

The fourth proportional to 81,040.43, 111,701.95 and 54,173.14 is: 74,669.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,040.43 : 111,701.95 = 54,173.14 : x
  2. Step 2: Convert to fraction form
    81,040.43/111,701.95 = 54,173.14/x
  3. Step 3: Cross multiply
    81,040.43x = 111,701.95 × 54,173.14
  4. Step 4: Simplify right side
    81,040.43x = 6,051,244,960.94
  5. Step 5: Solve for x
    x = 6,051,244,960.94/81,040.43
  6. Step 6: Final answer
    x = 74,669.46

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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.