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Finding the Fourth Proportional to 87,509.97, 120,760.97 and 49,271.49

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Solution

The fourth proportional to 87,509.97, 120,760.97 and 49,271.49 is: 67,993.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,509.97 : 120,760.97 = 49,271.49 : x
  2. Step 2: Convert to fraction form
    87,509.97/120,760.97 = 49,271.49/x
  3. Step 3: Cross multiply
    87,509.97x = 120,760.97 × 49,271.49
  4. Step 4: Simplify right side
    87,509.97x = 5,950,072,679.39
  5. Step 5: Solve for x
    x = 5,950,072,679.39/87,509.97
  6. Step 6: Final answer
    x = 67,993.08

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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.