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Finding the Fourth Proportional to 68,523.60, 102,785.40 and 38,999.10

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Solution

The fourth proportional to 68,523.60, 102,785.40 and 38,999.10 is: 58,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,523.60 : 102,785.40 = 38,999.10 : x
  2. Step 2: Convert to fraction form
    68,523.60/102,785.40 = 38,999.10/x
  3. Step 3: Cross multiply
    68,523.60x = 102,785.40 × 38,999.10
  4. Step 4: Simplify right side
    68,523.60x = 4,008,538,093.14
  5. Step 5: Solve for x
    x = 4,008,538,093.14/68,523.60
  6. Step 6: Final answer
    x = 58,498.65

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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.