Home / 90,307.56-135,544.50-45,966

Finding the Fourth Proportional to 90,307.56, 135,544.50 and 45,966

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Solution

The fourth proportional to 90,307.56, 135,544.50 and 45,966 is: 68,991.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,307.56 : 135,544.50 = 45,966 : x
  2. Step 2: Convert to fraction form
    90,307.56/135,544.50 = 45,966/x
  3. Step 3: Cross multiply
    90,307.56x = 135,544.50 × 45,966
  4. Step 4: Simplify right side
    90,307.56x = 6,230,438,487
  5. Step 5: Solve for x
    x = 6,230,438,487/90,307.56
  6. Step 6: Final answer
    x = 68,991.33

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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.