Home / 82,708.36-114,086.46-72,123.28

Finding the Fourth Proportional to 82,708.36, 114,086.46 and 72,123.28

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Solution

The fourth proportional to 82,708.36, 114,086.46 and 72,123.28 is: 99,485.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,708.36 : 114,086.46 = 72,123.28 : x
  2. Step 2: Convert to fraction form
    82,708.36/114,086.46 = 72,123.28/x
  3. Step 3: Cross multiply
    82,708.36x = 114,086.46 × 72,123.28
  4. Step 4: Simplify right side
    82,708.36x = 8,228,289,698.79
  5. Step 5: Solve for x
    x = 8,228,289,698.79/82,708.36
  6. Step 6: Final answer
    x = 99,485.59

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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.