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Finding the Fourth Proportional to 73,271.25, 109,911.54 and 20,684.84

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Solution

The fourth proportional to 73,271.25, 109,911.54 and 20,684.84 is: 31,028.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,271.25 : 109,911.54 = 20,684.84 : x
  2. Step 2: Convert to fraction form
    73,271.25/109,911.54 = 20,684.84/x
  3. Step 3: Cross multiply
    73,271.25x = 109,911.54 × 20,684.84
  4. Step 4: Simplify right side
    73,271.25x = 2,273,502,069.50
  5. Step 5: Solve for x
    x = 2,273,502,069.50/73,271.25
  6. Step 6: Final answer
    x = 31,028.57

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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.