Home / 57,121.12-78,828.28-34,174.60

Finding the Fourth Proportional to 57,121.12, 78,828.28 and 34,174.60

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Solution

The fourth proportional to 57,121.12, 78,828.28 and 34,174.60 is: 47,161.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,121.12 : 78,828.28 = 34,174.60 : x
  2. Step 2: Convert to fraction form
    57,121.12/78,828.28 = 34,174.60/x
  3. Step 3: Cross multiply
    57,121.12x = 78,828.28 × 34,174.60
  4. Step 4: Simplify right side
    57,121.12x = 2,693,924,937.69
  5. Step 5: Solve for x
    x = 2,693,924,937.69/57,121.12
  6. Step 6: Final answer
    x = 47,161.63

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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.