Home / 45,126.17-67,713.86-20,165.21

Finding the Fourth Proportional to 45,126.17, 67,713.86 and 20,165.21

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Solution

The fourth proportional to 45,126.17, 67,713.86 and 20,165.21 is: 30,258.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,126.17 : 67,713.86 = 20,165.21 : x
  2. Step 2: Convert to fraction form
    45,126.17/67,713.86 = 20,165.21/x
  3. Step 3: Cross multiply
    45,126.17x = 67,713.86 × 20,165.21
  4. Step 4: Simplify right side
    45,126.17x = 1,365,464,206.81
  5. Step 5: Solve for x
    x = 1,365,464,206.81/45,126.17
  6. Step 6: Final answer
    x = 30,258.81

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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.