Home / 89,918.64-134,960.40-45,576.72

Finding the Fourth Proportional to 89,918.64, 134,960.40 and 45,576.72

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Solution

The fourth proportional to 89,918.64, 134,960.40 and 45,576.72 is: 68,406.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,918.64 : 134,960.40 = 45,576.72 : x
  2. Step 2: Convert to fraction form
    89,918.64/134,960.40 = 45,576.72/x
  3. Step 3: Cross multiply
    89,918.64x = 134,960.40 × 45,576.72
  4. Step 4: Simplify right side
    89,918.64x = 6,151,052,361.89
  5. Step 5: Solve for x
    x = 6,151,052,361.89/89,918.64
  6. Step 6: Final answer
    x = 68,406.87

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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.