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Finding the Fourth Proportional to 65,357.30, 90,185.67 and 36,673.21

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Solution

The fourth proportional to 65,357.30, 90,185.67 and 36,673.21 is: 50,604.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,357.30 : 90,185.67 = 36,673.21 : x
  2. Step 2: Convert to fraction form
    65,357.30/90,185.67 = 36,673.21/x
  3. Step 3: Cross multiply
    65,357.30x = 90,185.67 × 36,673.21
  4. Step 4: Simplify right side
    65,357.30x = 3,307,398,014.90
  5. Step 5: Solve for x
    x = 3,307,398,014.90/65,357.30
  6. Step 6: Final answer
    x = 50,604.88

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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.