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Finding the Fourth Proportional to 90,797.48, 125,304.56 and 75,664.79

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Solution

The fourth proportional to 90,797.48, 125,304.56 and 75,664.79 is: 104,420.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,797.48 : 125,304.56 = 75,664.79 : x
  2. Step 2: Convert to fraction form
    90,797.48/125,304.56 = 75,664.79/x
  3. Step 3: Cross multiply
    90,797.48x = 125,304.56 × 75,664.79
  4. Step 4: Simplify right side
    90,797.48x = 9,481,143,218.44
  5. Step 5: Solve for x
    x = 9,481,143,218.44/90,797.48
  6. Step 6: Final answer
    x = 104,420.77

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1.5x scale

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.