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Finding the Fourth Proportional to 62,109, 93,178.08 and 20,556

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Solution

The fourth proportional to 62,109, 93,178.08 and 20,556 is: 30,838.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,109 : 93,178.08 = 20,556 : x
  2. Step 2: Convert to fraction form
    62,109/93,178.08 = 20,556/x
  3. Step 3: Cross multiply
    62,109x = 93,178.08 × 20,556
  4. Step 4: Simplify right side
    62,109x = 1,915,368,612.48
  5. Step 5: Solve for x
    x = 1,915,368,612.48/62,109
  6. Step 6: Final answer
    x = 30,838.83

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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.