Home / 76,145.54-114,210.06-19,991.28

Finding the Fourth Proportional to 76,145.54, 114,210.06 and 19,991.28

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Solution

The fourth proportional to 76,145.54, 114,210.06 and 19,991.28 is: 29,984.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,145.54 : 114,210.06 = 19,991.28 : x
  2. Step 2: Convert to fraction form
    76,145.54/114,210.06 = 19,991.28/x
  3. Step 3: Cross multiply
    76,145.54x = 114,210.06 × 19,991.28
  4. Step 4: Simplify right side
    76,145.54x = 2,283,205,288.28
  5. Step 5: Solve for x
    x = 2,283,205,288.28/76,145.54
  6. Step 6: Final answer
    x = 29,984.75

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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.