Home / 66,635.90-99,939.11-19,240.71

Finding the Fourth Proportional to 66,635.90, 99,939.11 and 19,240.71

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Solution

The fourth proportional to 66,635.90, 99,939.11 and 19,240.71 is: 28,856.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,635.90 : 99,939.11 = 19,240.71 : x
  2. Step 2: Convert to fraction form
    66,635.90/99,939.11 = 19,240.71/x
  3. Step 3: Cross multiply
    66,635.90x = 99,939.11 × 19,240.71
  4. Step 4: Simplify right side
    66,635.90x = 1,922,898,837.27
  5. Step 5: Solve for x
    x = 1,922,898,837.27/66,635.90
  6. Step 6: Final answer
    x = 28,856.80

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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.