Home / 66,516.87-91,781.18-39,297.38

Finding the Fourth Proportional to 66,516.87, 91,781.18 and 39,297.38

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Solution

The fourth proportional to 66,516.87, 91,781.18 and 39,297.38 is: 54,223.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,516.87 : 91,781.18 = 39,297.38 : x
  2. Step 2: Convert to fraction form
    66,516.87/91,781.18 = 39,297.38/x
  3. Step 3: Cross multiply
    66,516.87x = 91,781.18 × 39,297.38
  4. Step 4: Simplify right side
    66,516.87x = 3,606,759,907.31
  5. Step 5: Solve for x
    x = 3,606,759,907.31/66,516.87
  6. Step 6: Final answer
    x = 54,223.24

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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.