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Finding the Fourth Proportional to 51,786.98, 77,664 and 16,718.48

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Solution

The fourth proportional to 51,786.98, 77,664 and 16,718.48 is: 25,072.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,786.98 : 77,664 = 16,718.48 : x
  2. Step 2: Convert to fraction form
    51,786.98/77,664 = 16,718.48/x
  3. Step 3: Cross multiply
    51,786.98x = 77,664 × 16,718.48
  4. Step 4: Simplify right side
    51,786.98x = 1,298,424,030.72
  5. Step 5: Solve for x
    x = 1,298,424,030.72/51,786.98
  6. Step 6: Final answer
    x = 25,072.40

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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.