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Finding the Fourth Proportional to 66,914.91, 100,371.15 and 56,451.94

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Solution

The fourth proportional to 66,914.91, 100,371.15 and 56,451.94 is: 84,676.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,914.91 : 100,371.15 = 56,451.94 : x
  2. Step 2: Convert to fraction form
    66,914.91/100,371.15 = 56,451.94/x
  3. Step 3: Cross multiply
    66,914.91x = 100,371.15 × 56,451.94
  4. Step 4: Simplify right side
    66,914.91x = 5,666,145,886.60
  5. Step 5: Solve for x
    x = 5,666,145,886.60/66,914.91
  6. Step 6: Final answer
    x = 84,676.88

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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.