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Finding the Fourth Proportional to 101,155.56, 139,600.74 and 56,446.44

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Solution

The fourth proportional to 101,155.56, 139,600.74 and 56,446.44 is: 77,899.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,155.56 : 139,600.74 = 56,446.44 : x
  2. Step 2: Convert to fraction form
    101,155.56/139,600.74 = 56,446.44/x
  3. Step 3: Cross multiply
    101,155.56x = 139,600.74 × 56,446.44
  4. Step 4: Simplify right side
    101,155.56x = 7,879,964,794.37
  5. Step 5: Solve for x
    x = 7,879,964,794.37/101,155.56
  6. Step 6: Final answer
    x = 77,899.47

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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.