Home / 66,505.55-91,774.81-36,290.12

Finding the Fourth Proportional to 66,505.55, 91,774.81 and 36,290.12

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Solution

The fourth proportional to 66,505.55, 91,774.81 and 36,290.12 is: 50,078.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,505.55 : 91,774.81 = 36,290.12 : x
  2. Step 2: Convert to fraction form
    66,505.55/91,774.81 = 36,290.12/x
  3. Step 3: Cross multiply
    66,505.55x = 91,774.81 × 36,290.12
  4. Step 4: Simplify right side
    66,505.55x = 3,330,519,097.31
  5. Step 5: Solve for x
    x = 3,330,519,097.31/66,505.55
  6. Step 6: Final answer
    x = 50,078.81

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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.