Home / 66,057.68-91,159.36-39,222.26

Finding the Fourth Proportional to 66,057.68, 91,159.36 and 39,222.26

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Solution

The fourth proportional to 66,057.68, 91,159.36 and 39,222.26 is: 54,126.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,057.68 : 91,159.36 = 39,222.26 : x
  2. Step 2: Convert to fraction form
    66,057.68/91,159.36 = 39,222.26/x
  3. Step 3: Cross multiply
    66,057.68x = 91,159.36 × 39,222.26
  4. Step 4: Simplify right side
    66,057.68x = 3,575,476,119.35
  5. Step 5: Solve for x
    x = 3,575,476,119.35/66,057.68
  6. Step 6: Final answer
    x = 54,126.58

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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.