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Finding the Fourth Proportional to 79,999.78, 120,003.78 and 35,629.66

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Solution

The fourth proportional to 79,999.78, 120,003.78 and 35,629.66 is: 53,446.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,999.78 : 120,003.78 = 35,629.66 : x
  2. Step 2: Convert to fraction form
    79,999.78/120,003.78 = 35,629.66/x
  3. Step 3: Cross multiply
    79,999.78x = 120,003.78 × 35,629.66
  4. Step 4: Simplify right side
    79,999.78x = 4,275,693,880.11
  5. Step 5: Solve for x
    x = 4,275,693,880.11/79,999.78
  6. Step 6: Final answer
    x = 53,446.32

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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.