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Finding the Fourth Proportional to 45,885.74, 68,827.79 and 12,605.67

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Solution

The fourth proportional to 45,885.74, 68,827.79 and 12,605.67 is: 18,908.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,885.74 : 68,827.79 = 12,605.67 : x
  2. Step 2: Convert to fraction form
    45,885.74/68,827.79 = 12,605.67/x
  3. Step 3: Cross multiply
    45,885.74x = 68,827.79 × 12,605.67
  4. Step 4: Simplify right side
    45,885.74x = 867,620,344.54
  5. Step 5: Solve for x
    x = 867,620,344.54/45,885.74
  6. Step 6: Final answer
    x = 18,908.28

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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.