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Finding the Fourth Proportional to 64,137, 88,509.63 and 35,456.21

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Solution

The fourth proportional to 64,137, 88,509.63 and 35,456.21 is: 48,929.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,137 : 88,509.63 = 35,456.21 : x
  2. Step 2: Convert to fraction form
    64,137/88,509.63 = 35,456.21/x
  3. Step 3: Cross multiply
    64,137x = 88,509.63 × 35,456.21
  4. Step 4: Simplify right side
    64,137x = 3,138,215,585.75
  5. Step 5: Solve for x
    x = 3,138,215,585.75/64,137
  6. Step 6: Final answer
    x = 48,929.88

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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.