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Finding the Fourth Proportional to 66,512.10, 99,768.15 and 41,580.30

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Solution

The fourth proportional to 66,512.10, 99,768.15 and 41,580.30 is: 62,370.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,512.10 : 99,768.15 = 41,580.30 : x
  2. Step 2: Convert to fraction form
    66,512.10/99,768.15 = 41,580.30/x
  3. Step 3: Cross multiply
    66,512.10x = 99,768.15 × 41,580.30
  4. Step 4: Simplify right side
    66,512.10x = 4,148,389,607.45
  5. Step 5: Solve for x
    x = 4,148,389,607.45/66,512.10
  6. Step 6: Final answer
    x = 62,370.45

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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.