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Finding the Fourth Proportional to 73,687.40, 110,528.40 and 21,096.80

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Solution

The fourth proportional to 73,687.40, 110,528.40 and 21,096.80 is: 31,644.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,687.40 : 110,528.40 = 21,096.80 : x
  2. Step 2: Convert to fraction form
    73,687.40/110,528.40 = 21,096.80/x
  3. Step 3: Cross multiply
    73,687.40x = 110,528.40 × 21,096.80
  4. Step 4: Simplify right side
    73,687.40x = 2,331,795,549.12
  5. Step 5: Solve for x
    x = 2,331,795,549.12/73,687.40
  6. Step 6: Final answer
    x = 31,644.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.