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Finding the Fourth Proportional to 85,053.73, 117,394.98 and 65,895.61

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Solution

The fourth proportional to 85,053.73, 117,394.98 and 65,895.61 is: 90,952.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,053.73 : 117,394.98 = 65,895.61 : x
  2. Step 2: Convert to fraction form
    85,053.73/117,394.98 = 65,895.61/x
  3. Step 3: Cross multiply
    85,053.73x = 117,394.98 × 65,895.61
  4. Step 4: Simplify right side
    85,053.73x = 7,735,813,818.04
  5. Step 5: Solve for x
    x = 7,735,813,818.04/85,053.73
  6. Step 6: Final answer
    x = 90,952.08

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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.