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Finding the Fourth Proportional to 66,508,329.20, 99,762,493.80 and 43,814,850.80

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Solution

The fourth proportional to 66,508,329.20, 99,762,493.80 and 43,814,850.80 is: 65,722,276.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,508,329.20 : 99,762,493.80 = 43,814,850.80 : x
  2. Step 2: Convert to fraction form
    66,508,329.20/99,762,493.80 = 43,814,850.80/x
  3. Step 3: Cross multiply
    66,508,329.20x = 99,762,493.80 × 43,814,850.80
  4. Step 4: Simplify right side
    66,508,329.20x = 4,371,078,781,282,924.50
  5. Step 5: Solve for x
    x = 4,371,078,781,282,924.50/66,508,329.20
  6. Step 6: Final answer
    x = 65,722,276.20

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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.