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Finding the Fourth Proportional to 53,415.01, 80,066.01 and 20,120.67

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Solution

The fourth proportional to 53,415.01, 80,066.01 and 20,120.67 is: 30,159.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,415.01 : 80,066.01 = 20,120.67 : x
  2. Step 2: Convert to fraction form
    53,415.01/80,066.01 = 20,120.67/x
  3. Step 3: Cross multiply
    53,415.01x = 80,066.01 × 20,120.67
  4. Step 4: Simplify right side
    53,415.01x = 1,610,981,765.43
  5. Step 5: Solve for x
    x = 1,610,981,765.43/53,415.01
  6. Step 6: Final answer
    x = 30,159.72

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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.