Home / 45,681.44-68,513.79-20,715.49

Finding the Fourth Proportional to 45,681.44, 68,513.79 and 20,715.49

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Solution

The fourth proportional to 45,681.44, 68,513.79 and 20,715.49 is: 31,069.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,681.44 : 68,513.79 = 20,715.49 : x
  2. Step 2: Convert to fraction form
    45,681.44/68,513.79 = 20,715.49/x
  3. Step 3: Cross multiply
    45,681.44x = 68,513.79 × 20,715.49
  4. Step 4: Simplify right side
    45,681.44x = 1,419,296,560.32
  5. Step 5: Solve for x
    x = 1,419,296,560.32/45,681.44
  6. Step 6: Final answer
    x = 31,069.43

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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.