Home / 77,977.52-116,965.19-18,812.69

Finding the Fourth Proportional to 77,977.52, 116,965.19 and 18,812.69

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Solution

The fourth proportional to 77,977.52, 116,965.19 and 18,812.69 is: 28,218.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,977.52 : 116,965.19 = 18,812.69 : x
  2. Step 2: Convert to fraction form
    77,977.52/116,965.19 = 18,812.69/x
  3. Step 3: Cross multiply
    77,977.52x = 116,965.19 × 18,812.69
  4. Step 4: Simplify right side
    77,977.52x = 2,200,429,181.37
  5. Step 5: Solve for x
    x = 2,200,429,181.37/77,977.52
  6. Step 6: Final answer
    x = 28,218.77

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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.