Home / 45,382.06-68,028.63-20,428.39

Finding the Fourth Proportional to 45,382.06, 68,028.63 and 20,428.39

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Solution

The fourth proportional to 45,382.06, 68,028.63 and 20,428.39 is: 30,622.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,382.06 : 68,028.63 = 20,428.39 : x
  2. Step 2: Convert to fraction form
    45,382.06/68,028.63 = 20,428.39/x
  3. Step 3: Cross multiply
    45,382.06x = 68,028.63 × 20,428.39
  4. Step 4: Simplify right side
    45,382.06x = 1,389,715,384.81
  5. Step 5: Solve for x
    x = 1,389,715,384.81/45,382.06
  6. Step 6: Final answer
    x = 30,622.57

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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.