Home / 64,621.08-89,149.68-39,456

Finding the Fourth Proportional to 64,621.08, 89,149.68 and 39,456

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Solution

The fourth proportional to 64,621.08, 89,149.68 and 39,456 is: 54,432.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,621.08 : 89,149.68 = 39,456 : x
  2. Step 2: Convert to fraction form
    64,621.08/89,149.68 = 39,456/x
  3. Step 3: Cross multiply
    64,621.08x = 89,149.68 × 39,456
  4. Step 4: Simplify right side
    64,621.08x = 3,517,489,774.08
  5. Step 5: Solve for x
    x = 3,517,489,774.08/64,621.08
  6. Step 6: Final answer
    x = 54,432.54

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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.