Home / 66,427.12-99,741.30-57,168.64

Finding the Fourth Proportional to 66,427.12, 99,741.30 and 57,168.64

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Solution

The fourth proportional to 66,427.12, 99,741.30 and 57,168.64 is: 85,839.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,427.12 : 99,741.30 = 57,168.64 : x
  2. Step 2: Convert to fraction form
    66,427.12/99,741.30 = 57,168.64/x
  3. Step 3: Cross multiply
    66,427.12x = 99,741.30 × 57,168.64
  4. Step 4: Simplify right side
    66,427.12x = 5,702,074,472.83
  5. Step 5: Solve for x
    x = 5,702,074,472.83/66,427.12
  6. Step 6: Final answer
    x = 85,839.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.