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Finding the Fourth Proportional to 66,828.92, 92,212.18 and 38,135.48

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Solution

The fourth proportional to 66,828.92, 92,212.18 and 38,135.48 is: 52,620.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,828.92 : 92,212.18 = 38,135.48 : x
  2. Step 2: Convert to fraction form
    66,828.92/92,212.18 = 38,135.48/x
  3. Step 3: Cross multiply
    66,828.92x = 92,212.18 × 38,135.48
  4. Step 4: Simplify right side
    66,828.92x = 3,516,555,297.00
  5. Step 5: Solve for x
    x = 3,516,555,297.00/66,828.92
  6. Step 6: Final answer
    x = 52,620.27

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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.