Home / 66,629.93-91,940.42-42,788.90

Finding the Fourth Proportional to 66,629.93, 91,940.42 and 42,788.90

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Solution

The fourth proportional to 66,629.93, 91,940.42 and 42,788.90 is: 59,042.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,629.93 : 91,940.42 = 42,788.90 : x
  2. Step 2: Convert to fraction form
    66,629.93/91,940.42 = 42,788.90/x
  3. Step 3: Cross multiply
    66,629.93x = 91,940.42 × 42,788.90
  4. Step 4: Simplify right side
    66,629.93x = 3,934,028,763.69
  5. Step 5: Solve for x
    x = 3,934,028,763.69/66,629.93
  6. Step 6: Final answer
    x = 59,042.97

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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.