Home / 50,639.20-69,881.70-27,979.72

Finding the Fourth Proportional to 50,639.20, 69,881.70 and 27,979.72

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Solution

The fourth proportional to 50,639.20, 69,881.70 and 27,979.72 is: 38,611.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,639.20 : 69,881.70 = 27,979.72 : x
  2. Step 2: Convert to fraction form
    50,639.20/69,881.70 = 27,979.72/x
  3. Step 3: Cross multiply
    50,639.20x = 69,881.70 × 27,979.72
  4. Step 4: Simplify right side
    50,639.20x = 1,955,270,399.12
  5. Step 5: Solve for x
    x = 1,955,270,399.12/50,639.20
  6. Step 6: Final answer
    x = 38,611.79

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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.