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Finding the Fourth Proportional to 53,745.78, 80,619.42 and 20,467.68

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Solution

The fourth proportional to 53,745.78, 80,619.42 and 20,467.68 is: 30,701.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,745.78 : 80,619.42 = 20,467.68 : x
  2. Step 2: Convert to fraction form
    53,745.78/80,619.42 = 20,467.68/x
  3. Step 3: Cross multiply
    53,745.78x = 80,619.42 × 20,467.68
  4. Step 4: Simplify right side
    53,745.78x = 1,650,092,490.35
  5. Step 5: Solve for x
    x = 1,650,092,490.35/53,745.78
  6. Step 6: Final answer
    x = 30,701.81

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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.