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Finding the Fourth Proportional to 66,718.88, 100,027.44 and 40,416.64

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Solution

The fourth proportional to 66,718.88, 100,027.44 and 40,416.64 is: 60,594.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,718.88 : 100,027.44 = 40,416.64 : x
  2. Step 2: Convert to fraction form
    66,718.88/100,027.44 = 40,416.64/x
  3. Step 3: Cross multiply
    66,718.88x = 100,027.44 × 40,416.64
  4. Step 4: Simplify right side
    66,718.88x = 4,042,773,032.60
  5. Step 5: Solve for x
    x = 4,042,773,032.60/66,718.88
  6. Step 6: Final answer
    x = 60,594.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.