Home / 76,964.16-106,180.56-51,830.40

Finding the Fourth Proportional to 76,964.16, 106,180.56 and 51,830.40

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Solution

The fourth proportional to 76,964.16, 106,180.56 and 51,830.40 is: 71,505.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,964.16 : 106,180.56 = 51,830.40 : x
  2. Step 2: Convert to fraction form
    76,964.16/106,180.56 = 51,830.40/x
  3. Step 3: Cross multiply
    76,964.16x = 106,180.56 × 51,830.40
  4. Step 4: Simplify right side
    76,964.16x = 5,503,380,897.02
  5. Step 5: Solve for x
    x = 5,503,380,897.02/76,964.16
  6. Step 6: Final answer
    x = 71,505.76

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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.