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Finding the Fourth Proportional to 65,644.50, 90,589.95 and 35,836.50

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Solution

The fourth proportional to 65,644.50, 90,589.95 and 35,836.50 is: 49,454.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,644.50 : 90,589.95 = 35,836.50 : x
  2. Step 2: Convert to fraction form
    65,644.50/90,589.95 = 35,836.50/x
  3. Step 3: Cross multiply
    65,644.50x = 90,589.95 × 35,836.50
  4. Step 4: Simplify right side
    65,644.50x = 3,246,426,743.18
  5. Step 5: Solve for x
    x = 3,246,426,743.18/65,644.50
  6. Step 6: Final answer
    x = 49,454.66

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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.