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Finding the Fourth Proportional to 103,665.92, 155,400.36 and 40,526.54

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Solution

The fourth proportional to 103,665.92, 155,400.36 and 40,526.54 is: 60,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,665.92 : 155,400.36 = 40,526.54 : x
  2. Step 2: Convert to fraction form
    103,665.92/155,400.36 = 40,526.54/x
  3. Step 3: Cross multiply
    103,665.92x = 155,400.36 × 40,526.54
  4. Step 4: Simplify right side
    103,665.92x = 6,297,838,905.55
  5. Step 5: Solve for x
    x = 6,297,838,905.55/103,665.92
  6. Step 6: Final answer
    x = 60,751.30

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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.