Home / 76,969.85-115,491.22-53,313.80

Finding the Fourth Proportional to 76,969.85, 115,491.22 and 53,313.80

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Solution

The fourth proportional to 76,969.85, 115,491.22 and 53,313.80 is: 79,995.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,969.85 : 115,491.22 = 53,313.80 : x
  2. Step 2: Convert to fraction form
    76,969.85/115,491.22 = 53,313.80/x
  3. Step 3: Cross multiply
    76,969.85x = 115,491.22 × 53,313.80
  4. Step 4: Simplify right side
    76,969.85x = 6,157,275,094.10
  5. Step 5: Solve for x
    x = 6,157,275,094.10/76,969.85
  6. Step 6: Final answer
    x = 79,995.94

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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.