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Finding the Fourth Proportional to 103,693.41, 155,540.02 and 28,813.52

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Solution

The fourth proportional to 103,693.41, 155,540.02 and 28,813.52 is: 43,220.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,693.41 : 155,540.02 = 28,813.52 : x
  2. Step 2: Convert to fraction form
    103,693.41/155,540.02 = 28,813.52/x
  3. Step 3: Cross multiply
    103,693.41x = 155,540.02 × 28,813.52
  4. Step 4: Simplify right side
    103,693.41x = 4,481,655,477.07
  5. Step 5: Solve for x
    x = 4,481,655,477.07/103,693.41
  6. Step 6: Final answer
    x = 43,220.25

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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.