Home / 66,157.56-99,120.78-55,135.08

Finding the Fourth Proportional to 66,157.56, 99,120.78 and 55,135.08

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Solution

The fourth proportional to 66,157.56, 99,120.78 and 55,135.08 is: 82,606.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,157.56 : 99,120.78 = 55,135.08 : x
  2. Step 2: Convert to fraction form
    66,157.56/99,120.78 = 55,135.08/x
  3. Step 3: Cross multiply
    66,157.56x = 99,120.78 × 55,135.08
  4. Step 4: Simplify right side
    66,157.56x = 5,465,032,134.96
  5. Step 5: Solve for x
    x = 5,465,032,134.96/66,157.56
  6. Step 6: Final answer
    x = 82,606.31

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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.