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Finding the Fourth Proportional to 66,334.86, 99,429.30 and 28,851.30

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Solution

The fourth proportional to 66,334.86, 99,429.30 and 28,851.30 is: 43,245.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,334.86 : 99,429.30 = 28,851.30 : x
  2. Step 2: Convert to fraction form
    66,334.86/99,429.30 = 28,851.30/x
  3. Step 3: Cross multiply
    66,334.86x = 99,429.30 × 28,851.30
  4. Step 4: Simplify right side
    66,334.86x = 2,868,664,563.09
  5. Step 5: Solve for x
    x = 2,868,664,563.09/66,334.86
  6. Step 6: Final answer
    x = 43,245.20

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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.