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Finding the Fourth Proportional to 49,995.40, 74,994.45 and 21,901

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Solution

The fourth proportional to 49,995.40, 74,994.45 and 21,901 is: 32,852.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,995.40 : 74,994.45 = 21,901 : x
  2. Step 2: Convert to fraction form
    49,995.40/74,994.45 = 21,901/x
  3. Step 3: Cross multiply
    49,995.40x = 74,994.45 × 21,901
  4. Step 4: Simplify right side
    49,995.40x = 1,642,453,449.45
  5. Step 5: Solve for x
    x = 1,642,453,449.45/49,995.40
  6. Step 6: Final answer
    x = 32,852.09

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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.