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Finding the Fourth Proportional to 65,651.73, 90,599.31 and 38,803.92

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Solution

The fourth proportional to 65,651.73, 90,599.31 and 38,803.92 is: 53,549.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,651.73 : 90,599.31 = 38,803.92 : x
  2. Step 2: Convert to fraction form
    65,651.73/90,599.31 = 38,803.92/x
  3. Step 3: Cross multiply
    65,651.73x = 90,599.31 × 38,803.92
  4. Step 4: Simplify right side
    65,651.73x = 3,515,608,377.30
  5. Step 5: Solve for x
    x = 3,515,608,377.30/65,651.73
  6. Step 6: Final answer
    x = 53,549.36

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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.