Home / 77,346.60-115,991.10-30,589.80

Finding the Fourth Proportional to 77,346.60, 115,991.10 and 30,589.80

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Solution

The fourth proportional to 77,346.60, 115,991.10 and 30,589.80 is: 45,873.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,346.60 : 115,991.10 = 30,589.80 : x
  2. Step 2: Convert to fraction form
    77,346.60/115,991.10 = 30,589.80/x
  3. Step 3: Cross multiply
    77,346.60x = 115,991.10 × 30,589.80
  4. Step 4: Simplify right side
    77,346.60x = 3,548,144,550.78
  5. Step 5: Solve for x
    x = 3,548,144,550.78/77,346.60
  6. Step 6: Final answer
    x = 45,873.31

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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.