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Finding the Fourth Proportional to 48,600.42, 72,900.63 and 13,539.97

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Solution

The fourth proportional to 48,600.42, 72,900.63 and 13,539.97 is: 20,309.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,600.42 : 72,900.63 = 13,539.97 : x
  2. Step 2: Convert to fraction form
    48,600.42/72,900.63 = 13,539.97/x
  3. Step 3: Cross multiply
    48,600.42x = 72,900.63 × 13,539.97
  4. Step 4: Simplify right side
    48,600.42x = 987,072,343.18
  5. Step 5: Solve for x
    x = 987,072,343.18/48,600.42
  6. Step 6: Final answer
    x = 20,309.96

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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.