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Finding the Fourth Proportional to 65,525.31, 90,364.97 and 48,571.79

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Solution

The fourth proportional to 65,525.31, 90,364.97 and 48,571.79 is: 66,984.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,525.31 : 90,364.97 = 48,571.79 : x
  2. Step 2: Convert to fraction form
    65,525.31/90,364.97 = 48,571.79/x
  3. Step 3: Cross multiply
    65,525.31x = 90,364.97 × 48,571.79
  4. Step 4: Simplify right side
    65,525.31x = 4,389,188,505.04
  5. Step 5: Solve for x
    x = 4,389,188,505.04/65,525.31
  6. Step 6: Final answer
    x = 66,984.62

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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.