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Finding the Fourth Proportional to 103,491.60, 155,273.85 and 50,865.90

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Solution

The fourth proportional to 103,491.60, 155,273.85 and 50,865.90 is: 76,316.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,491.60 : 155,273.85 = 50,865.90 : x
  2. Step 2: Convert to fraction form
    103,491.60/155,273.85 = 50,865.90/x
  3. Step 3: Cross multiply
    103,491.60x = 155,273.85 × 50,865.90
  4. Step 4: Simplify right side
    103,491.60x = 7,898,144,126.72
  5. Step 5: Solve for x
    x = 7,898,144,126.72/103,491.60
  6. Step 6: Final answer
    x = 76,316.77

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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.