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Finding the Fourth Proportional to 40,466.79, 60,676.70 and 12,378.83

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Solution

The fourth proportional to 40,466.79, 60,676.70 and 12,378.83 is: 18,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,466.79 : 60,676.70 = 12,378.83 : x
  2. Step 2: Convert to fraction form
    40,466.79/60,676.70 = 12,378.83/x
  3. Step 3: Cross multiply
    40,466.79x = 60,676.70 × 12,378.83
  4. Step 4: Simplify right side
    40,466.79x = 751,106,188.98
  5. Step 5: Solve for x
    x = 751,106,188.98/40,466.79
  6. Step 6: Final answer
    x = 18,561.05

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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.