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Finding the Fourth Proportional to 66,861.30, 100,277.55 and 29,421.30

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Solution

The fourth proportional to 66,861.30, 100,277.55 and 29,421.30 is: 44,125.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,861.30 : 100,277.55 = 29,421.30 : x
  2. Step 2: Convert to fraction form
    66,861.30/100,277.55 = 29,421.30/x
  3. Step 3: Cross multiply
    66,861.30x = 100,277.55 × 29,421.30
  4. Step 4: Simplify right side
    66,861.30x = 2,950,295,881.82
  5. Step 5: Solve for x
    x = 2,950,295,881.82/66,861.30
  6. Step 6: Final answer
    x = 44,125.61

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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.