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Finding the Fourth Proportional to 57,616, 86,424 and 18,704

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Solution

The fourth proportional to 57,616, 86,424 and 18,704 is: 28,056

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,616 : 86,424 = 18,704 : x
  2. Step 2: Convert to fraction form
    57,616/86,424 = 18,704/x
  3. Step 3: Cross multiply
    57,616x = 86,424 × 18,704
  4. Step 4: Simplify right side
    57,616x = 1,616,474,496
  5. Step 5: Solve for x
    x = 1,616,474,496/57,616
  6. Step 6: Final answer
    x = 28,056

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.