Home / 85,313.07-127,969.57-45,815.85

Finding the Fourth Proportional to 85,313.07, 127,969.57 and 45,815.85

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Solution

The fourth proportional to 85,313.07, 127,969.57 and 45,815.85 is: 68,723.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,313.07 : 127,969.57 = 45,815.85 : x
  2. Step 2: Convert to fraction form
    85,313.07/127,969.57 = 45,815.85/x
  3. Step 3: Cross multiply
    85,313.07x = 127,969.57 × 45,815.85
  4. Step 4: Simplify right side
    85,313.07x = 5,863,034,623.68
  5. Step 5: Solve for x
    x = 5,863,034,623.68/85,313.07
  6. Step 6: Final answer
    x = 68,723.76

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1.5x scale

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.