Home / 78,046.89-107,751.11-51,236.30

Finding the Fourth Proportional to 78,046.89, 107,751.11 and 51,236.30

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Solution

The fourth proportional to 78,046.89, 107,751.11 and 51,236.30 is: 70,736.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,046.89 : 107,751.11 = 51,236.30 : x
  2. Step 2: Convert to fraction form
    78,046.89/107,751.11 = 51,236.30/x
  3. Step 3: Cross multiply
    78,046.89x = 107,751.11 × 51,236.30
  4. Step 4: Simplify right side
    78,046.89x = 5,520,767,402.36
  5. Step 5: Solve for x
    x = 5,520,767,402.36/78,046.89
  6. Step 6: Final answer
    x = 70,736.55

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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.