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Finding the Fourth Proportional to 73,034.40, 100,786.90 and 39,500.40

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Solution

The fourth proportional to 73,034.40, 100,786.90 and 39,500.40 is: 54,510.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,034.40 : 100,786.90 = 39,500.40 : x
  2. Step 2: Convert to fraction form
    73,034.40/100,786.90 = 39,500.40/x
  3. Step 3: Cross multiply
    73,034.40x = 100,786.90 × 39,500.40
  4. Step 4: Simplify right side
    73,034.40x = 3,981,122,864.76
  5. Step 5: Solve for x
    x = 3,981,122,864.76/73,034.40
  6. Step 6: Final answer
    x = 54,510.24

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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.