Home / 51,819.09-77,709.60-18,530.13

Finding the Fourth Proportional to 51,819.09, 77,709.60 and 18,530.13

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Solution

The fourth proportional to 51,819.09, 77,709.60 and 18,530.13 is: 27,788.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,819.09 : 77,709.60 = 18,530.13 : x
  2. Step 2: Convert to fraction form
    51,819.09/77,709.60 = 18,530.13/x
  3. Step 3: Cross multiply
    51,819.09x = 77,709.60 × 18,530.13
  4. Step 4: Simplify right side
    51,819.09x = 1,439,968,990.25
  5. Step 5: Solve for x
    x = 1,439,968,990.25/51,819.09
  6. Step 6: Final answer
    x = 27,788.39

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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.