Home / 66,464.53-91,720.38-38,170.42

Finding the Fourth Proportional to 66,464.53, 91,720.38 and 38,170.42

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Solution

The fourth proportional to 66,464.53, 91,720.38 and 38,170.42 is: 52,674.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,464.53 : 91,720.38 = 38,170.42 : x
  2. Step 2: Convert to fraction form
    66,464.53/91,720.38 = 38,170.42/x
  3. Step 3: Cross multiply
    66,464.53x = 91,720.38 × 38,170.42
  4. Step 4: Simplify right side
    66,464.53x = 3,501,005,427.16
  5. Step 5: Solve for x
    x = 3,501,005,427.16/66,464.53
  6. Step 6: Final answer
    x = 52,674.79

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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.