Home / 45,289.33-67,912.16-18,987.01

Finding the Fourth Proportional to 45,289.33, 67,912.16 and 18,987.01

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Solution

The fourth proportional to 45,289.33, 67,912.16 and 18,987.01 is: 28,471.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,289.33 : 67,912.16 = 18,987.01 : x
  2. Step 2: Convert to fraction form
    45,289.33/67,912.16 = 18,987.01/x
  3. Step 3: Cross multiply
    45,289.33x = 67,912.16 × 18,987.01
  4. Step 4: Simplify right side
    45,289.33x = 1,289,448,596.33
  5. Step 5: Solve for x
    x = 1,289,448,596.33/45,289.33
  6. Step 6: Final answer
    x = 28,471.36

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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.