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Finding the Fourth Proportional to 79,728.66, 110,025.54 and 43,918.56

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Solution

The fourth proportional to 79,728.66, 110,025.54 and 43,918.56 is: 60,607.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,728.66 : 110,025.54 = 43,918.56 : x
  2. Step 2: Convert to fraction form
    79,728.66/110,025.54 = 43,918.56/x
  3. Step 3: Cross multiply
    79,728.66x = 110,025.54 × 43,918.56
  4. Step 4: Simplify right side
    79,728.66x = 4,832,163,280.02
  5. Step 5: Solve for x
    x = 4,832,163,280.02/79,728.66
  6. Step 6: Final answer
    x = 60,607.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.