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Finding the Fourth Proportional to 79,866.81, 119,719.11 and 51,804.71

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Solution

The fourth proportional to 79,866.81, 119,719.11 and 51,804.71 is: 77,654.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,866.81 : 119,719.11 = 51,804.71 : x
  2. Step 2: Convert to fraction form
    79,866.81/119,719.11 = 51,804.71/x
  3. Step 3: Cross multiply
    79,866.81x = 119,719.11 × 51,804.71
  4. Step 4: Simplify right side
    79,866.81x = 6,202,014,493.05
  5. Step 5: Solve for x
    x = 6,202,014,493.05/79,866.81
  6. Step 6: Final answer
    x = 77,654.47

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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.