Home / 76,661.40-105,790.14-43,120.92

Finding the Fourth Proportional to 76,661.40, 105,790.14 and 43,120.92

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Solution

The fourth proportional to 76,661.40, 105,790.14 and 43,120.92 is: 59,505.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,661.40 : 105,790.14 = 43,120.92 : x
  2. Step 2: Convert to fraction form
    76,661.40/105,790.14 = 43,120.92/x
  3. Step 3: Cross multiply
    76,661.40x = 105,790.14 × 43,120.92
  4. Step 4: Simplify right side
    76,661.40x = 4,561,768,163.73
  5. Step 5: Solve for x
    x = 4,561,768,163.73/76,661.40
  6. Step 6: Final answer
    x = 59,505.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.