Home / 90,949.64-136,429.52-27,779.36

Finding the Fourth Proportional to 90,949.64, 136,429.52 and 27,779.36

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Solution

The fourth proportional to 90,949.64, 136,429.52 and 27,779.36 is: 41,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,949.64 : 136,429.52 = 27,779.36 : x
  2. Step 2: Convert to fraction form
    90,949.64/136,429.52 = 27,779.36/x
  3. Step 3: Cross multiply
    90,949.64x = 136,429.52 × 27,779.36
  4. Step 4: Simplify right side
    90,949.64x = 3,789,923,929.66
  5. Step 5: Solve for x
    x = 3,789,923,929.66/90,949.64
  6. Step 6: Final answer
    x = 41,670.58

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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.