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Finding the Fourth Proportional to 68,171.85, 94,014.95 and 42,977.61

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Solution

The fourth proportional to 68,171.85, 94,014.95 and 42,977.61 is: 59,269.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,171.85 : 94,014.95 = 42,977.61 : x
  2. Step 2: Convert to fraction form
    68,171.85/94,014.95 = 42,977.61/x
  3. Step 3: Cross multiply
    68,171.85x = 94,014.95 × 42,977.61
  4. Step 4: Simplify right side
    68,171.85x = 4,040,537,640.38
  5. Step 5: Solve for x
    x = 4,040,537,640.38/68,171.85
  6. Step 6: Final answer
    x = 59,269.88

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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.