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Finding the Fourth Proportional to 61,871.70, 85,383.12 and 37,998.12

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Solution

The fourth proportional to 61,871.70, 85,383.12 and 37,998.12 is: 52,437.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,871.70 : 85,383.12 = 37,998.12 : x
  2. Step 2: Convert to fraction form
    61,871.70/85,383.12 = 37,998.12/x
  3. Step 3: Cross multiply
    61,871.70x = 85,383.12 × 37,998.12
  4. Step 4: Simplify right side
    61,871.70x = 3,244,398,039.73
  5. Step 5: Solve for x
    x = 3,244,398,039.73/61,871.70
  6. Step 6: Final answer
    x = 52,437.51

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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.