Home / 77,805.32-107,145.36-67,591.69

Finding the Fourth Proportional to 77,805.32, 107,145.36 and 67,591.69

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Solution

The fourth proportional to 77,805.32, 107,145.36 and 67,591.69 is: 93,080.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,805.32 : 107,145.36 = 67,591.69 : x
  2. Step 2: Convert to fraction form
    77,805.32/107,145.36 = 67,591.69/x
  3. Step 3: Cross multiply
    77,805.32x = 107,145.36 × 67,591.69
  4. Step 4: Simplify right side
    77,805.32x = 7,242,135,620.10
  5. Step 5: Solve for x
    x = 7,242,135,620.10/77,805.32
  6. Step 6: Final answer
    x = 93,080.21

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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.