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Finding the Fourth Proportional to 68,279.40, 102,419.10 and 44,659.80

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Solution

The fourth proportional to 68,279.40, 102,419.10 and 44,659.80 is: 66,989.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,279.40 : 102,419.10 = 44,659.80 : x
  2. Step 2: Convert to fraction form
    68,279.40/102,419.10 = 44,659.80/x
  3. Step 3: Cross multiply
    68,279.40x = 102,419.10 × 44,659.80
  4. Step 4: Simplify right side
    68,279.40x = 4,574,016,522.18
  5. Step 5: Solve for x
    x = 4,574,016,522.18/68,279.40
  6. Step 6: Final answer
    x = 66,989.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.