Home / 66,638.41-91,961.09-38,349.61

Finding the Fourth Proportional to 66,638.41, 91,961.09 and 38,349.61

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Solution

The fourth proportional to 66,638.41, 91,961.09 and 38,349.61 is: 52,922.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,638.41 : 91,961.09 = 38,349.61 : x
  2. Step 2: Convert to fraction form
    66,638.41/91,961.09 = 38,349.61/x
  3. Step 3: Cross multiply
    66,638.41x = 91,961.09 × 38,349.61
  4. Step 4: Simplify right side
    66,638.41x = 3,526,671,936.67
  5. Step 5: Solve for x
    x = 3,526,671,936.67/66,638.41
  6. Step 6: Final answer
    x = 52,922.51

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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.