Home / 66,090.21-91,206.03-39,232.82

Finding the Fourth Proportional to 66,090.21, 91,206.03 and 39,232.82

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Solution

The fourth proportional to 66,090.21, 91,206.03 and 39,232.82 is: 54,142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,090.21 : 91,206.03 = 39,232.82 : x
  2. Step 2: Convert to fraction form
    66,090.21/91,206.03 = 39,232.82/x
  3. Step 3: Cross multiply
    66,090.21x = 91,206.03 × 39,232.82
  4. Step 4: Simplify right side
    66,090.21x = 3,578,270,133.04
  5. Step 5: Solve for x
    x = 3,578,270,133.04/66,090.21
  6. Step 6: Final answer
    x = 54,142.21

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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.