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Finding the Fourth Proportional to 61,993.52, 85,553.72 and 38,128.08

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Solution

The fourth proportional to 61,993.52, 85,553.72 and 38,128.08 is: 52,618.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,993.52 : 85,553.72 = 38,128.08 : x
  2. Step 2: Convert to fraction form
    61,993.52/85,553.72 = 38,128.08/x
  3. Step 3: Cross multiply
    61,993.52x = 85,553.72 × 38,128.08
  4. Step 4: Simplify right side
    61,993.52x = 3,261,998,889.82
  5. Step 5: Solve for x
    x = 3,261,998,889.82/61,993.52
  6. Step 6: Final answer
    x = 52,618.39

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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.