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Finding the Fourth Proportional to 72,538.46, 108,795.15 and 19,230.79

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Solution

The fourth proportional to 72,538.46, 108,795.15 and 19,230.79 is: 28,842.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,538.46 : 108,795.15 = 19,230.79 : x
  2. Step 2: Convert to fraction form
    72,538.46/108,795.15 = 19,230.79/x
  3. Step 3: Cross multiply
    72,538.46x = 108,795.15 × 19,230.79
  4. Step 4: Simplify right side
    72,538.46x = 2,092,216,682.67
  5. Step 5: Solve for x
    x = 2,092,216,682.67/72,538.46
  6. Step 6: Final answer
    x = 28,842.86

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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.