Home / 53,712.52-80,556.60-20,420.74

Finding the Fourth Proportional to 53,712.52, 80,556.60 and 20,420.74

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Solution

The fourth proportional to 53,712.52, 80,556.60 and 20,420.74 is: 30,626.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,712.52 : 80,556.60 = 20,420.74 : x
  2. Step 2: Convert to fraction form
    53,712.52/80,556.60 = 20,420.74/x
  3. Step 3: Cross multiply
    53,712.52x = 80,556.60 × 20,420.74
  4. Step 4: Simplify right side
    53,712.52x = 1,645,025,383.88
  5. Step 5: Solve for x
    x = 1,645,025,383.88/53,712.52
  6. Step 6: Final answer
    x = 30,626.48

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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.