Home / 90,022.39-135,050-30,864.04

Finding the Fourth Proportional to 90,022.39, 135,050 and 30,864.04

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Solution

The fourth proportional to 90,022.39, 135,050 and 30,864.04 is: 46,301.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,022.39 : 135,050 = 30,864.04 : x
  2. Step 2: Convert to fraction form
    90,022.39/135,050 = 30,864.04/x
  3. Step 3: Cross multiply
    90,022.39x = 135,050 × 30,864.04
  4. Step 4: Simplify right side
    90,022.39x = 4,168,188,602
  5. Step 5: Solve for x
    x = 4,168,188,602/90,022.39
  6. Step 6: Final answer
    x = 46,301.69

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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.