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Finding the Fourth Proportional to 72,930.58, 109,249.95 and 57,962.96

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Solution

The fourth proportional to 72,930.58, 109,249.95 and 57,962.96 is: 86,828.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,930.58 : 109,249.95 = 57,962.96 : x
  2. Step 2: Convert to fraction form
    72,930.58/109,249.95 = 57,962.96/x
  3. Step 3: Cross multiply
    72,930.58x = 109,249.95 × 57,962.96
  4. Step 4: Simplify right side
    72,930.58x = 6,332,450,481.85
  5. Step 5: Solve for x
    x = 6,332,450,481.85/72,930.58
  6. Step 6: Final answer
    x = 86,828.47

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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.