Home / 77,700.16-107,243.20-49,400.32

Finding the Fourth Proportional to 77,700.16, 107,243.20 and 49,400.32

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Solution

The fourth proportional to 77,700.16, 107,243.20 and 49,400.32 is: 68,183.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,700.16 : 107,243.20 = 49,400.32 : x
  2. Step 2: Convert to fraction form
    77,700.16/107,243.20 = 49,400.32/x
  3. Step 3: Cross multiply
    77,700.16x = 107,243.20 × 49,400.32
  4. Step 4: Simplify right side
    77,700.16x = 5,297,848,397.82
  5. Step 5: Solve for x
    x = 5,297,848,397.82/77,700.16
  6. Step 6: Final answer
    x = 68,183.24

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Half scale
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Double scale
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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.