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Finding the Fourth Proportional to 65,134.20, 89,884.71 and 36,840.90

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Solution

The fourth proportional to 65,134.20, 89,884.71 and 36,840.90 is: 50,840.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,134.20 : 89,884.71 = 36,840.90 : x
  2. Step 2: Convert to fraction form
    65,134.20/89,884.71 = 36,840.90/x
  3. Step 3: Cross multiply
    65,134.20x = 89,884.71 × 36,840.90
  4. Step 4: Simplify right side
    65,134.20x = 3,311,433,612.64
  5. Step 5: Solve for x
    x = 3,311,433,612.64/65,134.20
  6. Step 6: Final answer
    x = 50,840.17

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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.