Home / 77,976.84-107,608.05-42,166.86

Finding the Fourth Proportional to 77,976.84, 107,608.05 and 42,166.86

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Solution

The fourth proportional to 77,976.84, 107,608.05 and 42,166.86 is: 58,190.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,976.84 : 107,608.05 = 42,166.86 : x
  2. Step 2: Convert to fraction form
    77,976.84/107,608.05 = 42,166.86/x
  3. Step 3: Cross multiply
    77,976.84x = 107,608.05 × 42,166.86
  4. Step 4: Simplify right side
    77,976.84x = 4,537,493,579.22
  5. Step 5: Solve for x
    x = 4,537,493,579.22/77,976.84
  6. Step 6: Final answer
    x = 58,190.27

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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.