Home / 39,856.84-54,991.38-31,447.24

Finding the Fourth Proportional to 39,856.84, 54,991.38 and 31,447.24

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Solution

The fourth proportional to 39,856.84, 54,991.38 and 31,447.24 is: 43,388.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,856.84 : 54,991.38 = 31,447.24 : x
  2. Step 2: Convert to fraction form
    39,856.84/54,991.38 = 31,447.24/x
  3. Step 3: Cross multiply
    39,856.84x = 54,991.38 × 31,447.24
  4. Step 4: Simplify right side
    39,856.84x = 1,729,327,124.79
  5. Step 5: Solve for x
    x = 1,729,327,124.79/39,856.84
  6. Step 6: Final answer
    x = 43,388.47

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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.