Home / 90,867.92-136,323.84-28,538.42

Finding the Fourth Proportional to 90,867.92, 136,323.84 and 28,538.42

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Solution

The fourth proportional to 90,867.92, 136,323.84 and 28,538.42 is: 42,814.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,867.92 : 136,323.84 = 28,538.42 : x
  2. Step 2: Convert to fraction form
    90,867.92/136,323.84 = 28,538.42/x
  3. Step 3: Cross multiply
    90,867.92x = 136,323.84 × 28,538.42
  4. Step 4: Simplify right side
    90,867.92x = 3,890,467,001.93
  5. Step 5: Solve for x
    x = 3,890,467,001.93/90,867.92
  6. Step 6: Final answer
    x = 42,814.53

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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.