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Finding the Fourth Proportional to 66,848.60, 100,299.90 and 29,415.80

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Solution

The fourth proportional to 66,848.60, 100,299.90 and 29,415.80 is: 44,135.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,848.60 : 100,299.90 = 29,415.80 : x
  2. Step 2: Convert to fraction form
    66,848.60/100,299.90 = 29,415.80/x
  3. Step 3: Cross multiply
    66,848.60x = 100,299.90 × 29,415.80
  4. Step 4: Simplify right side
    66,848.60x = 2,950,401,798.42
  5. Step 5: Solve for x
    x = 2,950,401,798.42/66,848.60
  6. Step 6: Final answer
    x = 44,135.58

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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.