Home / 45,190.30-67,779.66-11,912.98

Finding the Fourth Proportional to 45,190.30, 67,779.66 and 11,912.98

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Solution

The fourth proportional to 45,190.30, 67,779.66 and 11,912.98 is: 17,867.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,190.30 : 67,779.66 = 11,912.98 : x
  2. Step 2: Convert to fraction form
    45,190.30/67,779.66 = 11,912.98/x
  3. Step 3: Cross multiply
    45,190.30x = 67,779.66 × 11,912.98
  4. Step 4: Simplify right side
    45,190.30x = 807,457,733.99
  5. Step 5: Solve for x
    x = 807,457,733.99/45,190.30
  6. Step 6: Final answer
    x = 17,867.94

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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.