Home / 76,206.72-105,166.35-43,940.78

Finding the Fourth Proportional to 76,206.72, 105,166.35 and 43,940.78

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Solution

The fourth proportional to 76,206.72, 105,166.35 and 43,940.78 is: 60,638.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,206.72 : 105,166.35 = 43,940.78 : x
  2. Step 2: Convert to fraction form
    76,206.72/105,166.35 = 43,940.78/x
  3. Step 3: Cross multiply
    76,206.72x = 105,166.35 × 43,940.78
  4. Step 4: Simplify right side
    76,206.72x = 4,621,091,317.30
  5. Step 5: Solve for x
    x = 4,621,091,317.30/76,206.72
  6. Step 6: Final answer
    x = 60,638.89

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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.