Home / 77,680.58-115,993.96-61,706.30

Finding the Fourth Proportional to 77,680.58, 115,993.96 and 61,706.30

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Solution

The fourth proportional to 77,680.58, 115,993.96 and 61,706.30 is: 92,140.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,680.58 : 115,993.96 = 61,706.30 : x
  2. Step 2: Convert to fraction form
    77,680.58/115,993.96 = 61,706.30/x
  3. Step 3: Cross multiply
    77,680.58x = 115,993.96 × 61,706.30
  4. Step 4: Simplify right side
    77,680.58x = 7,157,558,093.95
  5. Step 5: Solve for x
    x = 7,157,558,093.95/77,680.58
  6. Step 6: Final answer
    x = 92,140.89

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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.