Home / 90,137.00-124,379.55-49,844.36

Finding the Fourth Proportional to 90,137.00, 124,379.55 and 49,844.36

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Solution

The fourth proportional to 90,137.00, 124,379.55 and 49,844.36 is: 68,779.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,137.00 : 124,379.55 = 49,844.36 : x
  2. Step 2: Convert to fraction form
    90,137.00/124,379.55 = 49,844.36/x
  3. Step 3: Cross multiply
    90,137.00x = 124,379.55 × 49,844.36
  4. Step 4: Simplify right side
    90,137.00x = 6,199,619,377.79
  5. Step 5: Solve for x
    x = 6,199,619,377.79/90,137.00
  6. Step 6: Final answer
    x = 68,779.96

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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.