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Finding the Fourth Proportional to 66,733,682.40, 100,100,523.60 and 21,300,069.60

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Solution

The fourth proportional to 66,733,682.40, 100,100,523.60 and 21,300,069.60 is: 31,950,104.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,733,682.40 : 100,100,523.60 = 21,300,069.60 : x
  2. Step 2: Convert to fraction form
    66,733,682.40/100,100,523.60 = 21,300,069.60/x
  3. Step 3: Cross multiply
    66,733,682.40x = 100,100,523.60 × 21,300,069.60
  4. Step 4: Simplify right side
    66,733,682.40x = 2,132,148,119,676,442.50
  5. Step 5: Solve for x
    x = 2,132,148,119,676,442.50/66,733,682.40
  6. Step 6: Final answer
    x = 31,950,104.40

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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.