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Finding the Fourth Proportional to 40,311.40, 60,466.80 and 12,231.40

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Solution

The fourth proportional to 40,311.40, 60,466.80 and 12,231.40 is: 18,347.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,311.40 : 60,466.80 = 12,231.40 : x
  2. Step 2: Convert to fraction form
    40,311.40/60,466.80 = 12,231.40/x
  3. Step 3: Cross multiply
    40,311.40x = 60,466.80 × 12,231.40
  4. Step 4: Simplify right side
    40,311.40x = 739,593,617.52
  5. Step 5: Solve for x
    x = 739,593,617.52/40,311.40
  6. Step 6: Final answer
    x = 18,347.01

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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.