Home / 77,986.98-116,980.47-18,822.60

Finding the Fourth Proportional to 77,986.98, 116,980.47 and 18,822.60

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Solution

The fourth proportional to 77,986.98, 116,980.47 and 18,822.60 is: 28,233.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,986.98 : 116,980.47 = 18,822.60 : x
  2. Step 2: Convert to fraction form
    77,986.98/116,980.47 = 18,822.60/x
  3. Step 3: Cross multiply
    77,986.98x = 116,980.47 × 18,822.60
  4. Step 4: Simplify right side
    77,986.98x = 2,201,876,594.62
  5. Step 5: Solve for x
    x = 2,201,876,594.62/77,986.98
  6. Step 6: Final answer
    x = 28,233.90

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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.