Home / 86,668.20-119,657.70-70,790.76

Finding the Fourth Proportional to 86,668.20, 119,657.70 and 70,790.76

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Solution

The fourth proportional to 86,668.20, 119,657.70 and 70,790.76 is: 97,736.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,668.20 : 119,657.70 = 70,790.76 : x
  2. Step 2: Convert to fraction form
    86,668.20/119,657.70 = 70,790.76/x
  3. Step 3: Cross multiply
    86,668.20x = 119,657.70 × 70,790.76
  4. Step 4: Simplify right side
    86,668.20x = 8,470,659,522.85
  5. Step 5: Solve for x
    x = 8,470,659,522.85/86,668.20
  6. Step 6: Final answer
    x = 97,736.65

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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.