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Finding the Fourth Proportional to 66,745.62, 92,111.58 and 39,881.97

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Solution

The fourth proportional to 66,745.62, 92,111.58 and 39,881.97 is: 55,038.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,745.62 : 92,111.58 = 39,881.97 : x
  2. Step 2: Convert to fraction form
    66,745.62/92,111.58 = 39,881.97/x
  3. Step 3: Cross multiply
    66,745.62x = 92,111.58 × 39,881.97
  4. Step 4: Simplify right side
    66,745.62x = 3,673,591,270.21
  5. Step 5: Solve for x
    x = 3,673,591,270.21/66,745.62
  6. Step 6: Final answer
    x = 55,038.69

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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.