Home / 57,419.89-79,239.67-31,928.58

Finding the Fourth Proportional to 57,419.89, 79,239.67 and 31,928.58

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Solution

The fourth proportional to 57,419.89, 79,239.67 and 31,928.58 is: 44,061.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,419.89 : 79,239.67 = 31,928.58 : x
  2. Step 2: Convert to fraction form
    57,419.89/79,239.67 = 31,928.58/x
  3. Step 3: Cross multiply
    57,419.89x = 79,239.67 × 31,928.58
  4. Step 4: Simplify right side
    57,419.89x = 2,530,010,062.95
  5. Step 5: Solve for x
    x = 2,530,010,062.95/57,419.89
  6. Step 6: Final answer
    x = 44,061.56

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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.