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Finding the Fourth Proportional to 55,394.71, 83,103.02 and 20,334.67

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Solution

The fourth proportional to 55,394.71, 83,103.02 and 20,334.67 is: 30,506.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,394.71 : 83,103.02 = 20,334.67 : x
  2. Step 2: Convert to fraction form
    55,394.71/83,103.02 = 20,334.67/x
  3. Step 3: Cross multiply
    55,394.71x = 83,103.02 × 20,334.67
  4. Step 4: Simplify right side
    55,394.71x = 1,689,872,487.70
  5. Step 5: Solve for x
    x = 1,689,872,487.70/55,394.71
  6. Step 6: Final answer
    x = 30,506.03

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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.