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Finding the Fourth Proportional to 64,354.35, 88,809 and 39,203.85

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Solution

The fourth proportional to 64,354.35, 88,809 and 39,203.85 is: 54,101.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,354.35 : 88,809 = 39,203.85 : x
  2. Step 2: Convert to fraction form
    64,354.35/88,809 = 39,203.85/x
  3. Step 3: Cross multiply
    64,354.35x = 88,809 × 39,203.85
  4. Step 4: Simplify right side
    64,354.35x = 3,481,654,714.65
  5. Step 5: Solve for x
    x = 3,481,654,714.65/64,354.35
  6. Step 6: Final answer
    x = 54,101.31

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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.