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Finding the Fourth Proportional to 66,308.94, 99,419.67 and 26,819.82

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Solution

The fourth proportional to 66,308.94, 99,419.67 and 26,819.82 is: 40,212.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,308.94 : 99,419.67 = 26,819.82 : x
  2. Step 2: Convert to fraction form
    66,308.94/99,419.67 = 26,819.82/x
  3. Step 3: Cross multiply
    66,308.94x = 99,419.67 × 26,819.82
  4. Step 4: Simplify right side
    66,308.94x = 2,666,417,653.86
  5. Step 5: Solve for x
    x = 2,666,417,653.86/66,308.94
  6. Step 6: Final answer
    x = 40,212.04

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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.