Home / 45,129.12-67,707.52-20,190.16

Finding the Fourth Proportional to 45,129.12, 67,707.52 and 20,190.16

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Solution

The fourth proportional to 45,129.12, 67,707.52 and 20,190.16 is: 30,291.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,129.12 : 67,707.52 = 20,190.16 : x
  2. Step 2: Convert to fraction form
    45,129.12/67,707.52 = 20,190.16/x
  3. Step 3: Cross multiply
    45,129.12x = 67,707.52 × 20,190.16
  4. Step 4: Simplify right side
    45,129.12x = 1,367,025,662.00
  5. Step 5: Solve for x
    x = 1,367,025,662.00/45,129.12
  6. Step 6: Final answer
    x = 30,291.43

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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.