Home / 76,405.80-114,571.02-31,418.94

Finding the Fourth Proportional to 76,405.80, 114,571.02 and 31,418.94

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Solution

The fourth proportional to 76,405.80, 114,571.02 and 31,418.94 is: 47,112.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,405.80 : 114,571.02 = 31,418.94 : x
  2. Step 2: Convert to fraction form
    76,405.80/114,571.02 = 31,418.94/x
  3. Step 3: Cross multiply
    76,405.80x = 114,571.02 × 31,418.94
  4. Step 4: Simplify right side
    76,405.80x = 3,599,700,003.12
  5. Step 5: Solve for x
    x = 3,599,700,003.12/76,405.80
  6. Step 6: Final answer
    x = 47,112.92

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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.