Home / 66,236.21-99,362.51-21,260.55

Finding the Fourth Proportional to 66,236.21, 99,362.51 and 21,260.55

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Solution

The fourth proportional to 66,236.21, 99,362.51 and 21,260.55 is: 31,893.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,236.21 : 99,362.51 = 21,260.55 : x
  2. Step 2: Convert to fraction form
    66,236.21/99,362.51 = 21,260.55/x
  3. Step 3: Cross multiply
    66,236.21x = 99,362.51 × 21,260.55
  4. Step 4: Simplify right side
    66,236.21x = 2,112,501,611.98
  5. Step 5: Solve for x
    x = 2,112,501,611.98/66,236.21
  6. Step 6: Final answer
    x = 31,893.46

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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.