Home / 30,087.32-45,131.18-7,900.52

Finding the Fourth Proportional to 30,087.32, 45,131.18 and 7,900.52

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Solution

The fourth proportional to 30,087.32, 45,131.18 and 7,900.52 is: 11,850.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,087.32 : 45,131.18 = 7,900.52 : x
  2. Step 2: Convert to fraction form
    30,087.32/45,131.18 = 7,900.52/x
  3. Step 3: Cross multiply
    30,087.32x = 45,131.18 × 7,900.52
  4. Step 4: Simplify right side
    30,087.32x = 356,559,790.21
  5. Step 5: Solve for x
    x = 356,559,790.21/30,087.32
  6. Step 6: Final answer
    x = 11,850.83

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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.