Home / 66,028.38-91,113.75-36,220.38

Finding the Fourth Proportional to 66,028.38, 91,113.75 and 36,220.38

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Solution

The fourth proportional to 66,028.38, 91,113.75 and 36,220.38 is: 49,981.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,028.38 : 91,113.75 = 36,220.38 : x
  2. Step 2: Convert to fraction form
    66,028.38/91,113.75 = 36,220.38/x
  3. Step 3: Cross multiply
    66,028.38x = 91,113.75 × 36,220.38
  4. Step 4: Simplify right side
    66,028.38x = 3,300,174,648.23
  5. Step 5: Solve for x
    x = 3,300,174,648.23/66,028.38
  6. Step 6: Final answer
    x = 49,981.15

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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.