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Finding the Fourth Proportional to 80,809.66, 111,516.86 and 47,274.94

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Solution

The fourth proportional to 80,809.66, 111,516.86 and 47,274.94 is: 65,239.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,809.66 : 111,516.86 = 47,274.94 : x
  2. Step 2: Convert to fraction form
    80,809.66/111,516.86 = 47,274.94/x
  3. Step 3: Cross multiply
    80,809.66x = 111,516.86 × 47,274.94
  4. Step 4: Simplify right side
    80,809.66x = 5,271,952,865.49
  5. Step 5: Solve for x
    x = 5,271,952,865.49/80,809.66
  6. Step 6: Final answer
    x = 65,239.14

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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.