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Finding the Fourth Proportional to 51,960.65, 77,940.99 and 12,517.74

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Solution

The fourth proportional to 51,960.65, 77,940.99 and 12,517.74 is: 18,776.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,960.65 : 77,940.99 = 12,517.74 : x
  2. Step 2: Convert to fraction form
    51,960.65/77,940.99 = 12,517.74/x
  3. Step 3: Cross multiply
    51,960.65x = 77,940.99 × 12,517.74
  4. Step 4: Simplify right side
    51,960.65x = 975,645,048.16
  5. Step 5: Solve for x
    x = 975,645,048.16/51,960.65
  6. Step 6: Final answer
    x = 18,776.62

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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.