Home / 101,977.20-152,964.72-31,857.12

Finding the Fourth Proportional to 101,977.20, 152,964.72 and 31,857.12

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Solution

The fourth proportional to 101,977.20, 152,964.72 and 31,857.12 is: 47,785.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,977.20 : 152,964.72 = 31,857.12 : x
  2. Step 2: Convert to fraction form
    101,977.20/152,964.72 = 31,857.12/x
  3. Step 3: Cross multiply
    101,977.20x = 152,964.72 × 31,857.12
  4. Step 4: Simplify right side
    101,977.20x = 4,873,015,440.81
  5. Step 5: Solve for x
    x = 4,873,015,440.81/101,977.20
  6. Step 6: Final answer
    x = 47,785.34

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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.