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Finding the Fourth Proportional to 103,696.76, 155,544.12 and 47,520.94

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Solution

The fourth proportional to 103,696.76, 155,544.12 and 47,520.94 is: 71,280.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,696.76 : 155,544.12 = 47,520.94 : x
  2. Step 2: Convert to fraction form
    103,696.76/155,544.12 = 47,520.94/x
  3. Step 3: Cross multiply
    103,696.76x = 155,544.12 × 47,520.94
  4. Step 4: Simplify right side
    103,696.76x = 7,391,602,793.87
  5. Step 5: Solve for x
    x = 7,391,602,793.87/103,696.76
  6. Step 6: Final answer
    x = 71,280.94

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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.