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Finding the Fourth Proportional to 71,400.64, 98,544.48 and 68,250.88

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Solution

The fourth proportional to 71,400.64, 98,544.48 and 68,250.88 is: 94,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,400.64 : 98,544.48 = 68,250.88 : x
  2. Step 2: Convert to fraction form
    71,400.64/98,544.48 = 68,250.88/x
  3. Step 3: Cross multiply
    71,400.64x = 98,544.48 × 68,250.88
  4. Step 4: Simplify right side
    71,400.64x = 6,725,747,479.14
  5. Step 5: Solve for x
    x = 6,725,747,479.14/71,400.64
  6. Step 6: Final answer
    x = 94,197.30

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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.