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Finding the Fourth Proportional to 53,060.81, 79,520.87 and 38,954.89

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Solution

The fourth proportional to 53,060.81, 79,520.87 and 38,954.89 is: 58,380.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,060.81 : 79,520.87 = 38,954.89 : x
  2. Step 2: Convert to fraction form
    53,060.81/79,520.87 = 38,954.89/x
  3. Step 3: Cross multiply
    53,060.81x = 79,520.87 × 38,954.89
  4. Step 4: Simplify right side
    53,060.81x = 3,097,726,940.34
  5. Step 5: Solve for x
    x = 3,097,726,940.34/53,060.81
  6. Step 6: Final answer
    x = 58,380.70

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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.