Home / 90,950.64-136,431.02-27,780.36

Finding the Fourth Proportional to 90,950.64, 136,431.02 and 27,780.36

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Solution

The fourth proportional to 90,950.64, 136,431.02 and 27,780.36 is: 41,672.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,950.64 : 136,431.02 = 27,780.36 : x
  2. Step 2: Convert to fraction form
    90,950.64/136,431.02 = 27,780.36/x
  3. Step 3: Cross multiply
    90,950.64x = 136,431.02 × 27,780.36
  4. Step 4: Simplify right side
    90,950.64x = 3,790,102,850.77
  5. Step 5: Solve for x
    x = 3,790,102,850.77/90,950.64
  6. Step 6: Final answer
    x = 41,672.09

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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.