Home / 72,213.97-99,653.41-39,947.75

Finding the Fourth Proportional to 72,213.97, 99,653.41 and 39,947.75

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Solution

The fourth proportional to 72,213.97, 99,653.41 and 39,947.75 is: 55,126.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,213.97 : 99,653.41 = 39,947.75 : x
  2. Step 2: Convert to fraction form
    72,213.97/99,653.41 = 39,947.75/x
  3. Step 3: Cross multiply
    72,213.97x = 99,653.41 × 39,947.75
  4. Step 4: Simplify right side
    72,213.97x = 3,980,929,434.70
  5. Step 5: Solve for x
    x = 3,980,929,434.70/72,213.97
  6. Step 6: Final answer
    x = 55,126.86

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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.