Home / 66,265.12-91,415.73-39,392.38

Finding the Fourth Proportional to 66,265.12, 91,415.73 and 39,392.38

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Solution

The fourth proportional to 66,265.12, 91,415.73 and 39,392.38 is: 54,343.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,265.12 : 91,415.73 = 39,392.38 : x
  2. Step 2: Convert to fraction form
    66,265.12/91,415.73 = 39,392.38/x
  3. Step 3: Cross multiply
    66,265.12x = 91,415.73 × 39,392.38
  4. Step 4: Simplify right side
    66,265.12x = 3,601,083,174.14
  5. Step 5: Solve for x
    x = 3,601,083,174.14/66,265.12
  6. Step 6: Final answer
    x = 54,343.57

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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.