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Finding the Fourth Proportional to 56,379.83, 84,566.75 and 18,940.19

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Solution

The fourth proportional to 56,379.83, 84,566.75 and 18,940.19 is: 28,409.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,379.83 : 84,566.75 = 18,940.19 : x
  2. Step 2: Convert to fraction form
    56,379.83/84,566.75 = 18,940.19/x
  3. Step 3: Cross multiply
    56,379.83x = 84,566.75 × 18,940.19
  4. Step 4: Simplify right side
    56,379.83x = 1,601,709,795.15
  5. Step 5: Solve for x
    x = 1,601,709,795.15/56,379.83
  6. Step 6: Final answer
    x = 28,409.27

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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.