Home / 78,107.24-107,729.64-50,889.32

Finding the Fourth Proportional to 78,107.24, 107,729.64 and 50,889.32

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Solution

The fourth proportional to 78,107.24, 107,729.64 and 50,889.32 is: 70,189.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,107.24 : 107,729.64 = 50,889.32 : x
  2. Step 2: Convert to fraction form
    78,107.24/107,729.64 = 50,889.32/x
  3. Step 3: Cross multiply
    78,107.24x = 107,729.64 × 50,889.32
  4. Step 4: Simplify right side
    78,107.24x = 5,482,288,123.44
  5. Step 5: Solve for x
    x = 5,482,288,123.44/78,107.24
  6. Step 6: Final answer
    x = 70,189.24

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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.