Home / 66,606.05-91,915.26-36,390.72

Finding the Fourth Proportional to 66,606.05, 91,915.26 and 36,390.72

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Solution

The fourth proportional to 66,606.05, 91,915.26 and 36,390.72 is: 50,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,606.05 : 91,915.26 = 36,390.72 : x
  2. Step 2: Convert to fraction form
    66,606.05/91,915.26 = 36,390.72/x
  3. Step 3: Cross multiply
    66,606.05x = 91,915.26 × 36,390.72
  4. Step 4: Simplify right side
    66,606.05x = 3,344,862,464.36
  5. Step 5: Solve for x
    x = 3,344,862,464.36/66,606.05
  6. Step 6: Final answer
    x = 50,218.60

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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.