Home / 45,189.76-67,720.08-19,858.96

Finding the Fourth Proportional to 45,189.76, 67,720.08 and 19,858.96

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Solution

The fourth proportional to 45,189.76, 67,720.08 and 19,858.96 is: 29,760.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,189.76 : 67,720.08 = 19,858.96 : x
  2. Step 2: Convert to fraction form
    45,189.76/67,720.08 = 19,858.96/x
  3. Step 3: Cross multiply
    45,189.76x = 67,720.08 × 19,858.96
  4. Step 4: Simplify right side
    45,189.76x = 1,344,850,359.92
  5. Step 5: Solve for x
    x = 1,344,850,359.92/45,189.76
  6. Step 6: Final answer
    x = 29,760.07

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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.