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Finding the Fourth Proportional to 103,907.28, 155,838.29 and 28,004.05

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Solution

The fourth proportional to 103,907.28, 155,838.29 and 28,004.05 is: 41,999.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,907.28 : 155,838.29 = 28,004.05 : x
  2. Step 2: Convert to fraction form
    103,907.28/155,838.29 = 28,004.05/x
  3. Step 3: Cross multiply
    103,907.28x = 155,838.29 × 28,004.05
  4. Step 4: Simplify right side
    103,907.28x = 4,364,102,679.55
  5. Step 5: Solve for x
    x = 4,364,102,679.55/103,907.28
  6. Step 6: Final answer
    x = 41,999.97

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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.