Home / 87,410.40-120,637.03-49,171.56

Finding the Fourth Proportional to 87,410.40, 120,637.03 and 49,171.56

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Solution

The fourth proportional to 87,410.40, 120,637.03 and 49,171.56 is: 67,862.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,410.40 : 120,637.03 = 49,171.56 : x
  2. Step 2: Convert to fraction form
    87,410.40/120,637.03 = 49,171.56/x
  3. Step 3: Cross multiply
    87,410.40x = 120,637.03 × 49,171.56
  4. Step 4: Simplify right side
    87,410.40x = 5,931,911,135.43
  5. Step 5: Solve for x
    x = 5,931,911,135.43/87,410.40
  6. Step 6: Final answer
    x = 67,862.76

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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.