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Finding the Fourth Proportional to 66,881.78, 92,297.88 and 40,025.42

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Solution

The fourth proportional to 66,881.78, 92,297.88 and 40,025.42 is: 55,235.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,881.78 : 92,297.88 = 40,025.42 : x
  2. Step 2: Convert to fraction form
    66,881.78/92,297.88 = 40,025.42/x
  3. Step 3: Cross multiply
    66,881.78x = 92,297.88 × 40,025.42
  4. Step 4: Simplify right side
    66,881.78x = 3,694,261,412.11
  5. Step 5: Solve for x
    x = 3,694,261,412.11/66,881.78
  6. Step 6: Final answer
    x = 55,235.69

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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.