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Finding the Fourth Proportional to 68,533.80, 102,690.30 and 38,863.40

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Solution

The fourth proportional to 68,533.80, 102,690.30 and 38,863.40 is: 58,232.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,533.80 : 102,690.30 = 38,863.40 : x
  2. Step 2: Convert to fraction form
    68,533.80/102,690.30 = 38,863.40/x
  3. Step 3: Cross multiply
    68,533.80x = 102,690.30 × 38,863.40
  4. Step 4: Simplify right side
    68,533.80x = 3,990,894,205.02
  5. Step 5: Solve for x
    x = 3,990,894,205.02/68,533.80
  6. Step 6: Final answer
    x = 58,232.50

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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.