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Finding the Fourth Proportional to 40,704.59, 61,065.62 and 12,624.05

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Solution

The fourth proportional to 40,704.59, 61,065.62 and 12,624.05 is: 18,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,704.59 : 61,065.62 = 12,624.05 : x
  2. Step 2: Convert to fraction form
    40,704.59/61,065.62 = 12,624.05/x
  3. Step 3: Cross multiply
    40,704.59x = 61,065.62 × 12,624.05
  4. Step 4: Simplify right side
    40,704.59x = 770,895,071.71
  5. Step 5: Solve for x
    x = 770,895,071.71/40,704.59
  6. Step 6: Final answer
    x = 18,938.78

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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.