Home / 90,867.69-136,323.09-28,538.19

Finding the Fourth Proportional to 90,867.69, 136,323.09 and 28,538.19

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Solution

The fourth proportional to 90,867.69, 136,323.09 and 28,538.19 is: 42,814.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,867.69 : 136,323.09 = 28,538.19 : x
  2. Step 2: Convert to fraction form
    90,867.69/136,323.09 = 28,538.19/x
  3. Step 3: Cross multiply
    90,867.69x = 136,323.09 × 28,538.19
  4. Step 4: Simplify right side
    90,867.69x = 3,890,414,243.81
  5. Step 5: Solve for x
    x = 3,890,414,243.81/90,867.69
  6. Step 6: Final answer
    x = 42,814.05

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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.