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Finding the Fourth Proportional to 66,879.57, 100,263.96 and 52,153.77

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Solution

The fourth proportional to 66,879.57, 100,263.96 and 52,153.77 is: 78,187.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,879.57 : 100,263.96 = 52,153.77 : x
  2. Step 2: Convert to fraction form
    66,879.57/100,263.96 = 52,153.77/x
  3. Step 3: Cross multiply
    66,879.57x = 100,263.96 × 52,153.77
  4. Step 4: Simplify right side
    66,879.57x = 5,229,143,509.13
  5. Step 5: Solve for x
    x = 5,229,143,509.13/66,879.57
  6. Step 6: Final answer
    x = 78,187.46

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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.