Home / 66,485.14-91,761.39-39,629.39

Finding the Fourth Proportional to 66,485.14, 91,761.39 and 39,629.39

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Solution

The fourth proportional to 66,485.14, 91,761.39 and 39,629.39 is: 54,695.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.14 : 91,761.39 = 39,629.39 : x
  2. Step 2: Convert to fraction form
    66,485.14/91,761.39 = 39,629.39/x
  3. Step 3: Cross multiply
    66,485.14x = 91,761.39 × 39,629.39
  4. Step 4: Simplify right side
    66,485.14x = 3,636,447,452.45
  5. Step 5: Solve for x
    x = 3,636,447,452.45/66,485.14
  6. Step 6: Final answer
    x = 54,695.64

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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.