Home / 90,021.39-135,048.50-30,863.04

Finding the Fourth Proportional to 90,021.39, 135,048.50 and 30,863.04

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Solution

The fourth proportional to 90,021.39, 135,048.50 and 30,863.04 is: 46,300.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,021.39 : 135,048.50 = 30,863.04 : x
  2. Step 2: Convert to fraction form
    90,021.39/135,048.50 = 30,863.04/x
  3. Step 3: Cross multiply
    90,021.39x = 135,048.50 × 30,863.04
  4. Step 4: Simplify right side
    90,021.39x = 4,168,007,103.12
  5. Step 5: Solve for x
    x = 4,168,007,103.12/90,021.39
  6. Step 6: Final answer
    x = 46,300.19

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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.