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Finding the Fourth Proportional to 51,307.59, 76,953.96 and 13,869.84

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Solution

The fourth proportional to 51,307.59, 76,953.96 and 13,869.84 is: 20,802.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,307.59 : 76,953.96 = 13,869.84 : x
  2. Step 2: Convert to fraction form
    51,307.59/76,953.96 = 13,869.84/x
  3. Step 3: Cross multiply
    51,307.59x = 76,953.96 × 13,869.84
  4. Step 4: Simplify right side
    51,307.59x = 1,067,339,112.57
  5. Step 5: Solve for x
    x = 1,067,339,112.57/51,307.59
  6. Step 6: Final answer
    x = 20,802.75

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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.