Home / 76,289.70-114,286.94-42,908.34

Finding the Fourth Proportional to 76,289.70, 114,286.94 and 42,908.34

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Solution

The fourth proportional to 76,289.70, 114,286.94 and 42,908.34 is: 64,279.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,289.70 : 114,286.94 = 42,908.34 : x
  2. Step 2: Convert to fraction form
    76,289.70/114,286.94 = 42,908.34/x
  3. Step 3: Cross multiply
    76,289.70x = 114,286.94 × 42,908.34
  4. Step 4: Simplify right side
    76,289.70x = 4,903,862,879.08
  5. Step 5: Solve for x
    x = 4,903,862,879.08/76,289.70
  6. Step 6: Final answer
    x = 64,279.49

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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.