Home / 57,154.95-78,870.78-31,660.56

Finding the Fourth Proportional to 57,154.95, 78,870.78 and 31,660.56

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Solution

The fourth proportional to 57,154.95, 78,870.78 and 31,660.56 is: 43,689.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,154.95 : 78,870.78 = 31,660.56 : x
  2. Step 2: Convert to fraction form
    57,154.95/78,870.78 = 31,660.56/x
  3. Step 3: Cross multiply
    57,154.95x = 78,870.78 × 31,660.56
  4. Step 4: Simplify right side
    57,154.95x = 2,497,093,062.44
  5. Step 5: Solve for x
    x = 2,497,093,062.44/57,154.95
  6. Step 6: Final answer
    x = 43,689.88

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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.