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Finding the Fourth Proportional to 103,435.62, 155,153.44 and 28,553.28

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Solution

The fourth proportional to 103,435.62, 155,153.44 and 28,553.28 is: 42,829.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,435.62 : 155,153.44 = 28,553.28 : x
  2. Step 2: Convert to fraction form
    103,435.62/155,153.44 = 28,553.28/x
  3. Step 3: Cross multiply
    103,435.62x = 155,153.44 × 28,553.28
  4. Step 4: Simplify right side
    103,435.62x = 4,430,139,615.28
  5. Step 5: Solve for x
    x = 4,430,139,615.28/103,435.62
  6. Step 6: Final answer
    x = 42,829.92

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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.