Home / 76,629.12-114,805.44-43,728

Finding the Fourth Proportional to 76,629.12, 114,805.44 and 43,728

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Solution

The fourth proportional to 76,629.12, 114,805.44 and 43,728 is: 65,513.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,629.12 : 114,805.44 = 43,728 : x
  2. Step 2: Convert to fraction form
    76,629.12/114,805.44 = 43,728/x
  3. Step 3: Cross multiply
    76,629.12x = 114,805.44 × 43,728
  4. Step 4: Simplify right side
    76,629.12x = 5,020,212,280.32
  5. Step 5: Solve for x
    x = 5,020,212,280.32/76,629.12
  6. Step 6: Final answer
    x = 65,513.11

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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.