Home / 57,945.39-86,957.04-20,505.30

Finding the Fourth Proportional to 57,945.39, 86,957.04 and 20,505.30

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Solution

The fourth proportional to 57,945.39, 86,957.04 and 20,505.30 is: 30,771.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,945.39 : 86,957.04 = 20,505.30 : x
  2. Step 2: Convert to fraction form
    57,945.39/86,957.04 = 20,505.30/x
  3. Step 3: Cross multiply
    57,945.39x = 86,957.04 × 20,505.30
  4. Step 4: Simplify right side
    57,945.39x = 1,783,080,192.31
  5. Step 5: Solve for x
    x = 1,783,080,192.31/57,945.39
  6. Step 6: Final answer
    x = 30,771.74

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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.