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Finding the Fourth Proportional to 91,046.40, 125,644.80 and 50,764.80

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Solution

The fourth proportional to 91,046.40, 125,644.80 and 50,764.80 is: 70,055.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,046.40 : 125,644.80 = 50,764.80 : x
  2. Step 2: Convert to fraction form
    91,046.40/125,644.80 = 50,764.80/x
  3. Step 3: Cross multiply
    91,046.40x = 125,644.80 × 50,764.80
  4. Step 4: Simplify right side
    91,046.40x = 6,378,333,143.04
  5. Step 5: Solve for x
    x = 6,378,333,143.04/91,046.40
  6. Step 6: Final answer
    x = 70,055.85

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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.