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Finding the Fourth Proportional to 65,797.20, 90,800.64 and 36,329.84

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Solution

The fourth proportional to 65,797.20, 90,800.64 and 36,329.84 is: 50,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,797.20 : 90,800.64 = 36,329.84 : x
  2. Step 2: Convert to fraction form
    65,797.20/90,800.64 = 36,329.84/x
  3. Step 3: Cross multiply
    65,797.20x = 90,800.64 × 36,329.84
  4. Step 4: Simplify right side
    65,797.20x = 3,298,772,269.09
  5. Step 5: Solve for x
    x = 3,298,772,269.09/65,797.20
  6. Step 6: Final answer
    x = 50,135.45

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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.