Home / 45,087.42-67,637.28-18,786

Finding the Fourth Proportional to 45,087.42, 67,637.28 and 18,786

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Solution

The fourth proportional to 45,087.42, 67,637.28 and 18,786 is: 28,181.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,087.42 : 67,637.28 = 18,786 : x
  2. Step 2: Convert to fraction form
    45,087.42/67,637.28 = 18,786/x
  3. Step 3: Cross multiply
    45,087.42x = 67,637.28 × 18,786
  4. Step 4: Simplify right side
    45,087.42x = 1,270,633,942.08
  5. Step 5: Solve for x
    x = 1,270,633,942.08/45,087.42
  6. Step 6: Final answer
    x = 28,181.56

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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.