Home / 73,076.64-109,621.92-20,485.98

Finding the Fourth Proportional to 73,076.64, 109,621.92 and 20,485.98

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Solution

The fourth proportional to 73,076.64, 109,621.92 and 20,485.98 is: 30,730.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,076.64 : 109,621.92 = 20,485.98 : x
  2. Step 2: Convert to fraction form
    73,076.64/109,621.92 = 20,485.98/x
  3. Step 3: Cross multiply
    73,076.64x = 109,621.92 × 20,485.98
  4. Step 4: Simplify right side
    73,076.64x = 2,245,712,460.68
  5. Step 5: Solve for x
    x = 2,245,712,460.68/73,076.64
  6. Step 6: Final answer
    x = 30,730.92

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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.