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Finding the Fourth Proportional to 66,482.40, 99,640.44 and 33,211.76

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Solution

The fourth proportional to 66,482.40, 99,640.44 and 33,211.76 is: 49,776.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,482.40 : 99,640.44 = 33,211.76 : x
  2. Step 2: Convert to fraction form
    66,482.40/99,640.44 = 33,211.76/x
  3. Step 3: Cross multiply
    66,482.40x = 99,640.44 × 33,211.76
  4. Step 4: Simplify right side
    66,482.40x = 3,309,233,881.37
  5. Step 5: Solve for x
    x = 3,309,233,881.37/66,482.40
  6. Step 6: Final answer
    x = 49,776.09

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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.