Home / 90,843.25-136,269.74-28,518.61

Finding the Fourth Proportional to 90,843.25, 136,269.74 and 28,518.61

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Solution

The fourth proportional to 90,843.25, 136,269.74 and 28,518.61 is: 42,779.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,843.25 : 136,269.74 = 28,518.61 : x
  2. Step 2: Convert to fraction form
    90,843.25/136,269.74 = 28,518.61/x
  3. Step 3: Cross multiply
    90,843.25x = 136,269.74 × 28,518.61
  4. Step 4: Simplify right side
    90,843.25x = 3,886,223,569.86
  5. Step 5: Solve for x
    x = 3,886,223,569.86/90,843.25
  6. Step 6: Final answer
    x = 42,779.44

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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.