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Finding the Fourth Proportional to 51,103, 76,632.60 and 17,813.21

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Solution

The fourth proportional to 51,103, 76,632.60 and 17,813.21 is: 26,712.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,103 : 76,632.60 = 17,813.21 : x
  2. Step 2: Convert to fraction form
    51,103/76,632.60 = 17,813.21/x
  3. Step 3: Cross multiply
    51,103x = 76,632.60 × 17,813.21
  4. Step 4: Simplify right side
    51,103x = 1,365,072,596.65
  5. Step 5: Solve for x
    x = 1,365,072,596.65/51,103
  6. Step 6: Final answer
    x = 26,712.18

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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.