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Finding the Fourth Proportional to 68,314.40, 94,311 and 47,207.12

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Solution

The fourth proportional to 68,314.40, 94,311 and 47,207.12 is: 65,171.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,314.40 : 94,311 = 47,207.12 : x
  2. Step 2: Convert to fraction form
    68,314.40/94,311 = 47,207.12/x
  3. Step 3: Cross multiply
    68,314.40x = 94,311 × 47,207.12
  4. Step 4: Simplify right side
    68,314.40x = 4,452,150,694.32
  5. Step 5: Solve for x
    x = 4,452,150,694.32/68,314.40
  6. Step 6: Final answer
    x = 65,171.48

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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.