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Finding the Fourth Proportional to 87,608.80, 120,900.14 and 47,864.80

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Solution

The fourth proportional to 87,608.80, 120,900.14 and 47,864.80 is: 66,053.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,608.80 : 120,900.14 = 47,864.80 : x
  2. Step 2: Convert to fraction form
    87,608.80/120,900.14 = 47,864.80/x
  3. Step 3: Cross multiply
    87,608.80x = 120,900.14 × 47,864.80
  4. Step 4: Simplify right side
    87,608.80x = 5,786,861,021.07
  5. Step 5: Solve for x
    x = 5,786,861,021.07/87,608.80
  6. Step 6: Final answer
    x = 66,053.42

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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.