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Finding the Fourth Proportional to 65,278.84, 90,076.80 and 36,591.88

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Solution

The fourth proportional to 65,278.84, 90,076.80 and 36,591.88 is: 50,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,278.84 : 90,076.80 = 36,591.88 : x
  2. Step 2: Convert to fraction form
    65,278.84/90,076.80 = 36,591.88/x
  3. Step 3: Cross multiply
    65,278.84x = 90,076.80 × 36,591.88
  4. Step 4: Simplify right side
    65,278.84x = 3,296,079,456.38
  5. Step 5: Solve for x
    x = 3,296,079,456.38/65,278.84
  6. Step 6: Final answer
    x = 50,492.31

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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.