Home / 90,936.36-136,391.58-28,605.24

Finding the Fourth Proportional to 90,936.36, 136,391.58 and 28,605.24

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Solution

The fourth proportional to 90,936.36, 136,391.58 and 28,605.24 is: 42,903.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,936.36 : 136,391.58 = 28,605.24 : x
  2. Step 2: Convert to fraction form
    90,936.36/136,391.58 = 28,605.24/x
  3. Step 3: Cross multiply
    90,936.36x = 136,391.58 × 28,605.24
  4. Step 4: Simplify right side
    90,936.36x = 3,901,513,879.88
  5. Step 5: Solve for x
    x = 3,901,513,879.88/90,936.36
  6. Step 6: Final answer
    x = 42,903.78

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1.5x scale

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.