Home / 56,399.05-77,830.44-30,905.38

Finding the Fourth Proportional to 56,399.05, 77,830.44 and 30,905.38

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Solution

The fourth proportional to 56,399.05, 77,830.44 and 30,905.38 is: 42,649.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,399.05 : 77,830.44 = 30,905.38 : x
  2. Step 2: Convert to fraction form
    56,399.05/77,830.44 = 30,905.38/x
  3. Step 3: Cross multiply
    56,399.05x = 77,830.44 × 30,905.38
  4. Step 4: Simplify right side
    56,399.05x = 2,405,379,323.77
  5. Step 5: Solve for x
    x = 2,405,379,323.77/56,399.05
  6. Step 6: Final answer
    x = 42,649.29

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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.