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Finding the Fourth Proportional to 103,959.02, 155,915 and 47,745.09

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Solution

The fourth proportional to 103,959.02, 155,915 and 47,745.09 is: 71,606.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,959.02 : 155,915 = 47,745.09 : x
  2. Step 2: Convert to fraction form
    103,959.02/155,915 = 47,745.09/x
  3. Step 3: Cross multiply
    103,959.02x = 155,915 × 47,745.09
  4. Step 4: Simplify right side
    103,959.02x = 7,444,175,707.35
  5. Step 5: Solve for x
    x = 7,444,175,707.35/103,959.02
  6. Step 6: Final answer
    x = 71,606.83

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1.5x scale

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.