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Finding the Fourth Proportional to 66,632.34, 99,948.48 and 33,318.88

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Solution

The fourth proportional to 66,632.34, 99,948.48 and 33,318.88 is: 49,978.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,632.34 : 99,948.48 = 33,318.88 : x
  2. Step 2: Convert to fraction form
    66,632.34/99,948.48 = 33,318.88/x
  3. Step 3: Cross multiply
    66,632.34x = 99,948.48 × 33,318.88
  4. Step 4: Simplify right side
    66,632.34x = 3,330,171,411.30
  5. Step 5: Solve for x
    x = 3,330,171,411.30/66,632.34
  6. Step 6: Final answer
    x = 49,978.30

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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.