Home / 90,019.85-135,036.35-30,855.02

Finding the Fourth Proportional to 90,019.85, 135,036.35 and 30,855.02

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Solution

The fourth proportional to 90,019.85, 135,036.35 and 30,855.02 is: 46,284.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,019.85 : 135,036.35 = 30,855.02 : x
  2. Step 2: Convert to fraction form
    90,019.85/135,036.35 = 30,855.02/x
  3. Step 3: Cross multiply
    90,019.85x = 135,036.35 × 30,855.02
  4. Step 4: Simplify right side
    90,019.85x = 4,166,548,450.52
  5. Step 5: Solve for x
    x = 4,166,548,450.52/90,019.85
  6. Step 6: Final answer
    x = 46,284.78

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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.