Home / 87,977.08-121,406.88-49,736.04

Finding the Fourth Proportional to 87,977.08, 121,406.88 and 49,736.04

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Solution

The fourth proportional to 87,977.08, 121,406.88 and 49,736.04 is: 68,634.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,977.08 : 121,406.88 = 49,736.04 : x
  2. Step 2: Convert to fraction form
    87,977.08/121,406.88 = 49,736.04/x
  3. Step 3: Cross multiply
    87,977.08x = 121,406.88 × 49,736.04
  4. Step 4: Simplify right side
    87,977.08x = 6,038,297,439.96
  5. Step 5: Solve for x
    x = 6,038,297,439.96/87,977.08
  6. Step 6: Final answer
    x = 68,634.89

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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.