Home / 66,761.48-100,165.32-38,705.92

Finding the Fourth Proportional to 66,761.48, 100,165.32 and 38,705.92

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Solution

The fourth proportional to 66,761.48, 100,165.32 and 38,705.92 is: 58,072.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,761.48 : 100,165.32 = 38,705.92 : x
  2. Step 2: Convert to fraction form
    66,761.48/100,165.32 = 38,705.92/x
  3. Step 3: Cross multiply
    66,761.48x = 100,165.32 × 38,705.92
  4. Step 4: Simplify right side
    66,761.48x = 3,876,990,862.69
  5. Step 5: Solve for x
    x = 3,876,990,862.69/66,761.48
  6. Step 6: Final answer
    x = 58,072.27

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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.