Home / 90,235.06-135,332.79-30,271.93

Finding the Fourth Proportional to 90,235.06, 135,332.79 and 30,271.93

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Solution

The fourth proportional to 90,235.06, 135,332.79 and 30,271.93 is: 45,401.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,235.06 : 135,332.79 = 30,271.93 : x
  2. Step 2: Convert to fraction form
    90,235.06/135,332.79 = 30,271.93/x
  3. Step 3: Cross multiply
    90,235.06x = 135,332.79 × 30,271.93
  4. Step 4: Simplify right side
    90,235.06x = 4,096,784,745.58
  5. Step 5: Solve for x
    x = 4,096,784,745.58/90,235.06
  6. Step 6: Final answer
    x = 45,401.25

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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.