Home / 53,720.03-80,615.04-20,440.39

Finding the Fourth Proportional to 53,720.03, 80,615.04 and 20,440.39

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Solution

The fourth proportional to 53,720.03, 80,615.04 and 20,440.39 is: 30,673.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,720.03 : 80,615.04 = 20,440.39 : x
  2. Step 2: Convert to fraction form
    53,720.03/80,615.04 = 20,440.39/x
  3. Step 3: Cross multiply
    53,720.03x = 80,615.04 × 20,440.39
  4. Step 4: Simplify right side
    53,720.03x = 1,647,802,857.47
  5. Step 5: Solve for x
    x = 1,647,802,857.47/53,720.03
  6. Step 6: Final answer
    x = 30,673.90

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1.5x scale

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.