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Finding the Fourth Proportional to 72,279, 108,346.51 and 34,828.45

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Solution

The fourth proportional to 72,279, 108,346.51 and 34,828.45 is: 52,207.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,279 : 108,346.51 = 34,828.45 : x
  2. Step 2: Convert to fraction form
    72,279/108,346.51 = 34,828.45/x
  3. Step 3: Cross multiply
    72,279x = 108,346.51 × 34,828.45
  4. Step 4: Simplify right side
    72,279x = 3,773,540,778.88
  5. Step 5: Solve for x
    x = 3,773,540,778.88/72,279
  6. Step 6: Final answer
    x = 52,207.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.