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Finding the Fourth Proportional to 84,076.87, 125,584.88 and 70,790.85

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Solution

The fourth proportional to 84,076.87, 125,584.88 and 70,790.85 is: 105,739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,076.87 : 125,584.88 = 70,790.85 : x
  2. Step 2: Convert to fraction form
    84,076.87/125,584.88 = 70,790.85/x
  3. Step 3: Cross multiply
    84,076.87x = 125,584.88 × 70,790.85
  4. Step 4: Simplify right side
    84,076.87x = 8,890,260,402.35
  5. Step 5: Solve for x
    x = 8,890,260,402.35/84,076.87
  6. Step 6: Final answer
    x = 105,739.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.