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Finding the Fourth Proportional to 48,444, 72,699.20 and 18,861.99

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Solution

The fourth proportional to 48,444, 72,699.20 and 18,861.99 is: 28,305.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,444 : 72,699.20 = 18,861.99 : x
  2. Step 2: Convert to fraction form
    48,444/72,699.20 = 18,861.99/x
  3. Step 3: Cross multiply
    48,444x = 72,699.20 × 18,861.99
  4. Step 4: Simplify right side
    48,444x = 1,371,251,583.41
  5. Step 5: Solve for x
    x = 1,371,251,583.41/48,444
  6. Step 6: Final answer
    x = 28,305.91

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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.