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Finding the Fourth Proportional to 103,493.10, 155,258.10 and 28,611.58

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Solution

The fourth proportional to 103,493.10, 155,258.10 and 28,611.58 is: 42,922.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,493.10 : 155,258.10 = 28,611.58 : x
  2. Step 2: Convert to fraction form
    103,493.10/155,258.10 = 28,611.58/x
  3. Step 3: Cross multiply
    103,493.10x = 155,258.10 × 28,611.58
  4. Step 4: Simplify right side
    103,493.10x = 4,442,179,548.80
  5. Step 5: Solve for x
    x = 4,442,179,548.80/103,493.10
  6. Step 6: Final answer
    x = 42,922.47

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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.