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Finding the Fourth Proportional to 66,915.72, 92,333.52 and 38,230.38

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Solution

The fourth proportional to 66,915.72, 92,333.52 and 38,230.38 is: 52,752.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,915.72 : 92,333.52 = 38,230.38 : x
  2. Step 2: Convert to fraction form
    66,915.72/92,333.52 = 38,230.38/x
  3. Step 3: Cross multiply
    66,915.72x = 92,333.52 × 38,230.38
  4. Step 4: Simplify right side
    66,915.72x = 3,529,945,556.34
  5. Step 5: Solve for x
    x = 3,529,945,556.34/66,915.72
  6. Step 6: Final answer
    x = 52,752.11

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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.