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Finding the Fourth Proportional to 56,379.78, 84,566.77 and 18,940.16

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Solution

The fourth proportional to 56,379.78, 84,566.77 and 18,940.16 is: 28,409.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,379.78 : 84,566.77 = 18,940.16 : x
  2. Step 2: Convert to fraction form
    56,379.78/84,566.77 = 18,940.16/x
  3. Step 3: Cross multiply
    56,379.78x = 84,566.77 × 18,940.16
  4. Step 4: Simplify right side
    56,379.78x = 1,601,708,318.55
  5. Step 5: Solve for x
    x = 1,601,708,318.55/56,379.78
  6. Step 6: Final answer
    x = 28,409.27

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1.5x scale

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.