Home / 57,540.56-79,430.54-38,688.62

Finding the Fourth Proportional to 57,540.56, 79,430.54 and 38,688.62

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Solution

The fourth proportional to 57,540.56, 79,430.54 and 38,688.62 is: 53,406.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,540.56 : 79,430.54 = 38,688.62 : x
  2. Step 2: Convert to fraction form
    57,540.56/79,430.54 = 38,688.62/x
  3. Step 3: Cross multiply
    57,540.56x = 79,430.54 × 38,688.62
  4. Step 4: Simplify right side
    57,540.56x = 3,073,057,387.86
  5. Step 5: Solve for x
    x = 3,073,057,387.86/57,540.56
  6. Step 6: Final answer
    x = 53,406.81

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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.