Home / 90,021.52-135,048.68-30,863.17

Finding the Fourth Proportional to 90,021.52, 135,048.68 and 30,863.17

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Solution

The fourth proportional to 90,021.52, 135,048.68 and 30,863.17 is: 46,300.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,021.52 : 135,048.68 = 30,863.17 : x
  2. Step 2: Convert to fraction form
    90,021.52/135,048.68 = 30,863.17/x
  3. Step 3: Cross multiply
    90,021.52x = 135,048.68 × 30,863.17
  4. Step 4: Simplify right side
    90,021.52x = 4,168,029,539.56
  5. Step 5: Solve for x
    x = 4,168,029,539.56/90,021.52
  6. Step 6: Final answer
    x = 46,300.37

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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.