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Finding the Fourth Proportional to 61,514.78, 84,890.40 and 33,220.48

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Solution

The fourth proportional to 61,514.78, 84,890.40 and 33,220.48 is: 45,844.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,514.78 : 84,890.40 = 33,220.48 : x
  2. Step 2: Convert to fraction form
    61,514.78/84,890.40 = 33,220.48/x
  3. Step 3: Cross multiply
    61,514.78x = 84,890.40 × 33,220.48
  4. Step 4: Simplify right side
    61,514.78x = 2,820,099,835.39
  5. Step 5: Solve for x
    x = 2,820,099,835.39/61,514.78
  6. Step 6: Final answer
    x = 45,844.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.