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Finding the Fourth Proportional to 104,263.64, 143,879.96 and 56,515.95

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Solution

The fourth proportional to 104,263.64, 143,879.96 and 56,515.95 is: 77,989.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,263.64 : 143,879.96 = 56,515.95 : x
  2. Step 2: Convert to fraction form
    104,263.64/143,879.96 = 56,515.95/x
  3. Step 3: Cross multiply
    104,263.64x = 143,879.96 × 56,515.95
  4. Step 4: Simplify right side
    104,263.64x = 8,131,512,342.78
  5. Step 5: Solve for x
    x = 8,131,512,342.78/104,263.64
  6. Step 6: Final answer
    x = 77,989.92

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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.