Home / 72,961.36-109,442.34-20,370.69

Finding the Fourth Proportional to 72,961.36, 109,442.34 and 20,370.69

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Solution

The fourth proportional to 72,961.36, 109,442.34 and 20,370.69 is: 30,556.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,961.36 : 109,442.34 = 20,370.69 : x
  2. Step 2: Convert to fraction form
    72,961.36/109,442.34 = 20,370.69/x
  3. Step 3: Cross multiply
    72,961.36x = 109,442.34 × 20,370.69
  4. Step 4: Simplify right side
    72,961.36x = 2,229,415,981.01
  5. Step 5: Solve for x
    x = 2,229,415,981.01/72,961.36
  6. Step 6: Final answer
    x = 30,556.12

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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.