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Finding the Fourth Proportional to 103,630.49, 155,445.38 and 28,750.49

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Solution

The fourth proportional to 103,630.49, 155,445.38 and 28,750.49 is: 43,125.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.49 : 155,445.38 = 28,750.49 : x
  2. Step 2: Convert to fraction form
    103,630.49/155,445.38 = 28,750.49/x
  3. Step 3: Cross multiply
    103,630.49x = 155,445.38 × 28,750.49
  4. Step 4: Simplify right side
    103,630.49x = 4,469,130,699.48
  5. Step 5: Solve for x
    x = 4,469,130,699.48/103,630.49
  6. Step 6: Final answer
    x = 43,125.64

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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.