Home / 77,313.96-115,964.46-39,853.80

Finding the Fourth Proportional to 77,313.96, 115,964.46 and 39,853.80

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Solution

The fourth proportional to 77,313.96, 115,964.46 and 39,853.80 is: 59,777.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,313.96 : 115,964.46 = 39,853.80 : x
  2. Step 2: Convert to fraction form
    77,313.96/115,964.46 = 39,853.80/x
  3. Step 3: Cross multiply
    77,313.96x = 115,964.46 × 39,853.80
  4. Step 4: Simplify right side
    77,313.96x = 4,621,624,395.95
  5. Step 5: Solve for x
    x = 4,621,624,395.95/77,313.96
  6. Step 6: Final answer
    x = 59,777.36

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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.