Home / 91,991.62-126,960.17-56,174.10

Finding the Fourth Proportional to 91,991.62, 126,960.17 and 56,174.10

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Solution

The fourth proportional to 91,991.62, 126,960.17 and 56,174.10 is: 77,527.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,991.62 : 126,960.17 = 56,174.10 : x
  2. Step 2: Convert to fraction form
    91,991.62/126,960.17 = 56,174.10/x
  3. Step 3: Cross multiply
    91,991.62x = 126,960.17 × 56,174.10
  4. Step 4: Simplify right side
    91,991.62x = 7,131,873,285.60
  5. Step 5: Solve for x
    x = 7,131,873,285.60/91,991.62
  6. Step 6: Final answer
    x = 77,527.42

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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.