Home / 51,978.92-77,968.39-16,918.58

Finding the Fourth Proportional to 51,978.92, 77,968.39 and 16,918.58

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Solution

The fourth proportional to 51,978.92, 77,968.39 and 16,918.58 is: 25,377.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,978.92 : 77,968.39 = 16,918.58 : x
  2. Step 2: Convert to fraction form
    51,978.92/77,968.39 = 16,918.58/x
  3. Step 3: Cross multiply
    51,978.92x = 77,968.39 × 16,918.58
  4. Step 4: Simplify right side
    51,978.92x = 1,319,114,443.69
  5. Step 5: Solve for x
    x = 1,319,114,443.69/51,978.92
  6. Step 6: Final answer
    x = 25,377.87

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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.