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Finding the Fourth Proportional to 48,715.40, 73,080.40 and 20,635.40

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Solution

The fourth proportional to 48,715.40, 73,080.40 and 20,635.40 is: 30,956.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,715.40 : 73,080.40 = 20,635.40 : x
  2. Step 2: Convert to fraction form
    48,715.40/73,080.40 = 20,635.40/x
  3. Step 3: Cross multiply
    48,715.40x = 73,080.40 × 20,635.40
  4. Step 4: Simplify right side
    48,715.40x = 1,508,043,286.16
  5. Step 5: Solve for x
    x = 1,508,043,286.16/48,715.40
  6. Step 6: Final answer
    x = 30,956.19

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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.