Home / 78,798.12-108,709.38-50,520.36

Finding the Fourth Proportional to 78,798.12, 108,709.38 and 50,520.36

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Solution

The fourth proportional to 78,798.12, 108,709.38 and 50,520.36 is: 69,697.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,798.12 : 108,709.38 = 50,520.36 : x
  2. Step 2: Convert to fraction form
    78,798.12/108,709.38 = 50,520.36/x
  3. Step 3: Cross multiply
    78,798.12x = 108,709.38 × 50,520.36
  4. Step 4: Simplify right side
    78,798.12x = 5,492,037,012.98
  5. Step 5: Solve for x
    x = 5,492,037,012.98/78,798.12
  6. Step 6: Final answer
    x = 69,697.56

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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.