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Finding the Fourth Proportional to 61,900.96, 85,422 and 33,606.40

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Solution

The fourth proportional to 61,900.96, 85,422 and 33,606.40 is: 46,376.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,900.96 : 85,422 = 33,606.40 : x
  2. Step 2: Convert to fraction form
    61,900.96/85,422 = 33,606.40/x
  3. Step 3: Cross multiply
    61,900.96x = 85,422 × 33,606.40
  4. Step 4: Simplify right side
    61,900.96x = 2,870,725,900.80
  5. Step 5: Solve for x
    x = 2,870,725,900.80/61,900.96
  6. Step 6: Final answer
    x = 46,376.11

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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.