Home / 53,640.28-80,398.50-39,388.60

Finding the Fourth Proportional to 53,640.28, 80,398.50 and 39,388.60

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Solution

The fourth proportional to 53,640.28, 80,398.50 and 39,388.60 is: 59,037.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,640.28 : 80,398.50 = 39,388.60 : x
  2. Step 2: Convert to fraction form
    53,640.28/80,398.50 = 39,388.60/x
  3. Step 3: Cross multiply
    53,640.28x = 80,398.50 × 39,388.60
  4. Step 4: Simplify right side
    53,640.28x = 3,166,784,357.10
  5. Step 5: Solve for x
    x = 3,166,784,357.10/53,640.28
  6. Step 6: Final answer
    x = 59,037.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.