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Finding the Fourth Proportional to 66,998.91, 92,459.96 and 38,321.22

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Solution

The fourth proportional to 66,998.91, 92,459.96 and 38,321.22 is: 52,884.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,998.91 : 92,459.96 = 38,321.22 : x
  2. Step 2: Convert to fraction form
    66,998.91/92,459.96 = 38,321.22/x
  3. Step 3: Cross multiply
    66,998.91x = 92,459.96 × 38,321.22
  4. Step 4: Simplify right side
    66,998.91x = 3,543,178,468.35
  5. Step 5: Solve for x
    x = 3,543,178,468.35/66,998.91
  6. Step 6: Final answer
    x = 52,884.12

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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.