Home / 317,743.86-476,615.40-81,086.55

Finding the Fourth Proportional to 317,743.86, 476,615.40 and 81,086.55

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Solution

The fourth proportional to 317,743.86, 476,615.40 and 81,086.55 is: 121,629.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,743.86 : 476,615.40 = 81,086.55 : x
  2. Step 2: Convert to fraction form
    317,743.86/476,615.40 = 81,086.55/x
  3. Step 3: Cross multiply
    317,743.86x = 476,615.40 × 81,086.55
  4. Step 4: Simplify right side
    317,743.86x = 38,647,096,371.49
  5. Step 5: Solve for x
    x = 38,647,096,371.49/317,743.86
  6. Step 6: Final answer
    x = 121,629.72

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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.