Home / 81,923.35-112,995.99-54,685.71

Finding the Fourth Proportional to 81,923.35, 112,995.99 and 54,685.71

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Solution

The fourth proportional to 81,923.35, 112,995.99 and 54,685.71 is: 75,427.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,923.35 : 112,995.99 = 54,685.71 : x
  2. Step 2: Convert to fraction form
    81,923.35/112,995.99 = 54,685.71/x
  3. Step 3: Cross multiply
    81,923.35x = 112,995.99 × 54,685.71
  4. Step 4: Simplify right side
    81,923.35x = 6,179,265,721.64
  5. Step 5: Solve for x
    x = 6,179,265,721.64/81,923.35
  6. Step 6: Final answer
    x = 75,427.41

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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.