Home / 77,786.12-116,741.46-40,356.92

Finding the Fourth Proportional to 77,786.12, 116,741.46 and 40,356.92

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Solution

The fourth proportional to 77,786.12, 116,741.46 and 40,356.92 is: 60,567.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,786.12 : 116,741.46 = 40,356.92 : x
  2. Step 2: Convert to fraction form
    77,786.12/116,741.46 = 40,356.92/x
  3. Step 3: Cross multiply
    77,786.12x = 116,741.46 × 40,356.92
  4. Step 4: Simplify right side
    77,786.12x = 4,711,325,761.90
  5. Step 5: Solve for x
    x = 4,711,325,761.90/77,786.12
  6. Step 6: Final answer
    x = 60,567.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.