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Finding the Fourth Proportional to 66,912.70, 92,324.58 and 38,223.20

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Solution

The fourth proportional to 66,912.70, 92,324.58 and 38,223.20 is: 52,739.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,912.70 : 92,324.58 = 38,223.20 : x
  2. Step 2: Convert to fraction form
    66,912.70/92,324.58 = 38,223.20/x
  3. Step 3: Cross multiply
    66,912.70x = 92,324.58 × 38,223.20
  4. Step 4: Simplify right side
    66,912.70x = 3,528,940,886.26
  5. Step 5: Solve for x
    x = 3,528,940,886.26/66,912.70
  6. Step 6: Final answer
    x = 52,739.48

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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.