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Finding the Fourth Proportional to 91,901.80, 126,822.18 and 52,157.80

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Solution

The fourth proportional to 91,901.80, 126,822.18 and 52,157.80 is: 71,976.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,901.80 : 126,822.18 = 52,157.80 : x
  2. Step 2: Convert to fraction form
    91,901.80/126,822.18 = 52,157.80/x
  3. Step 3: Cross multiply
    91,901.80x = 126,822.18 × 52,157.80
  4. Step 4: Simplify right side
    91,901.80x = 6,614,765,900.00
  5. Step 5: Solve for x
    x = 6,614,765,900.00/91,901.80
  6. Step 6: Final answer
    x = 71,976.46

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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.