Home / 45,087.18-67,646.31-20,144.45

Finding the Fourth Proportional to 45,087.18, 67,646.31 and 20,144.45

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Solution

The fourth proportional to 45,087.18, 67,646.31 and 20,144.45 is: 30,223.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,087.18 : 67,646.31 = 20,144.45 : x
  2. Step 2: Convert to fraction form
    45,087.18/67,646.31 = 20,144.45/x
  3. Step 3: Cross multiply
    45,087.18x = 67,646.31 × 20,144.45
  4. Step 4: Simplify right side
    45,087.18x = 1,362,697,371.25
  5. Step 5: Solve for x
    x = 1,362,697,371.25/45,087.18
  6. Step 6: Final answer
    x = 30,223.61

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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.