Home / 40,121.94-60,189.74-20,140.98

Finding the Fourth Proportional to 40,121.94, 60,189.74 and 20,140.98

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Solution

The fourth proportional to 40,121.94, 60,189.74 and 20,140.98 is: 30,214.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,121.94 : 60,189.74 = 20,140.98 : x
  2. Step 2: Convert to fraction form
    40,121.94/60,189.74 = 20,140.98/x
  3. Step 3: Cross multiply
    40,121.94x = 60,189.74 × 20,140.98
  4. Step 4: Simplify right side
    40,121.94x = 1,212,280,349.55
  5. Step 5: Solve for x
    x = 1,212,280,349.55/40,121.94
  6. Step 6: Final answer
    x = 30,214.90

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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.