Home / 77,977.05-107,608.25-42,166.97

Finding the Fourth Proportional to 77,977.05, 107,608.25 and 42,166.97

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Solution

The fourth proportional to 77,977.05, 107,608.25 and 42,166.97 is: 58,190.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,977.05 : 107,608.25 = 42,166.97 : x
  2. Step 2: Convert to fraction form
    77,977.05/107,608.25 = 42,166.97/x
  3. Step 3: Cross multiply
    77,977.05x = 107,608.25 × 42,166.97
  4. Step 4: Simplify right side
    77,977.05x = 4,537,513,849.50
  5. Step 5: Solve for x
    x = 4,537,513,849.50/77,977.05
  6. Step 6: Final answer
    x = 58,190.38

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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.