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Finding the Fourth Proportional to 72,340.28, 108,541.53 and 39,053.73

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Solution

The fourth proportional to 72,340.28, 108,541.53 and 39,053.73 is: 58,597.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,340.28 : 108,541.53 = 39,053.73 : x
  2. Step 2: Convert to fraction form
    72,340.28/108,541.53 = 39,053.73/x
  3. Step 3: Cross multiply
    72,340.28x = 108,541.53 × 39,053.73
  4. Step 4: Simplify right side
    72,340.28x = 4,238,951,606.41
  5. Step 5: Solve for x
    x = 4,238,951,606.41/72,340.28
  6. Step 6: Final answer
    x = 58,597.39

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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.