Home / 57,180.16-78,936-38,091.70

Finding the Fourth Proportional to 57,180.16, 78,936 and 38,091.70

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Solution

The fourth proportional to 57,180.16, 78,936 and 38,091.70 is: 52,584.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,180.16 : 78,936 = 38,091.70 : x
  2. Step 2: Convert to fraction form
    57,180.16/78,936 = 38,091.70/x
  3. Step 3: Cross multiply
    57,180.16x = 78,936 × 38,091.70
  4. Step 4: Simplify right side
    57,180.16x = 3,006,806,431.20
  5. Step 5: Solve for x
    x = 3,006,806,431.20/57,180.16
  6. Step 6: Final answer
    x = 52,584.79

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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.