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Finding the Fourth Proportional to 71,544.78, 98,736.27 and 39,714.21

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Solution

The fourth proportional to 71,544.78, 98,736.27 and 39,714.21 is: 54,808.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,544.78 : 98,736.27 = 39,714.21 : x
  2. Step 2: Convert to fraction form
    71,544.78/98,736.27 = 39,714.21/x
  3. Step 3: Cross multiply
    71,544.78x = 98,736.27 × 39,714.21
  4. Step 4: Simplify right side
    71,544.78x = 3,921,232,961.40
  5. Step 5: Solve for x
    x = 3,921,232,961.40/71,544.78
  6. Step 6: Final answer
    x = 54,808.09

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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.