Home / 30,072.08-45,110.78-7,885.37

Finding the Fourth Proportional to 30,072.08, 45,110.78 and 7,885.37

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Solution

The fourth proportional to 30,072.08, 45,110.78 and 7,885.37 is: 11,828.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,072.08 : 45,110.78 = 7,885.37 : x
  2. Step 2: Convert to fraction form
    30,072.08/45,110.78 = 7,885.37/x
  3. Step 3: Cross multiply
    30,072.08x = 45,110.78 × 7,885.37
  4. Step 4: Simplify right side
    30,072.08x = 355,715,191.29
  5. Step 5: Solve for x
    x = 355,715,191.29/30,072.08
  6. Step 6: Final answer
    x = 11,828.75

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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.