Home / 87,639.88-120,943.04-49,917.64

Finding the Fourth Proportional to 87,639.88, 120,943.04 and 49,917.64

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Solution

The fourth proportional to 87,639.88, 120,943.04 and 49,917.64 is: 68,886.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,639.88 : 120,943.04 = 49,917.64 : x
  2. Step 2: Convert to fraction form
    87,639.88/120,943.04 = 49,917.64/x
  3. Step 3: Cross multiply
    87,639.88x = 120,943.04 × 49,917.64
  4. Step 4: Simplify right side
    87,639.88x = 6,037,191,131.23
  5. Step 5: Solve for x
    x = 6,037,191,131.23/87,639.88
  6. Step 6: Final answer
    x = 68,886.35

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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.