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Finding the Fourth Proportional to 79,211,791.80, 118,817,687.70 and 52,002,012.60

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Solution

The fourth proportional to 79,211,791.80, 118,817,687.70 and 52,002,012.60 is: 78,003,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,211,791.80 : 118,817,687.70 = 52,002,012.60 : x
  2. Step 2: Convert to fraction form
    79,211,791.80/118,817,687.70 = 52,002,012.60/x
  3. Step 3: Cross multiply
    79,211,791.80x = 118,817,687.70 × 52,002,012.60
  4. Step 4: Simplify right side
    79,211,791.80x = 6,178,758,892,878,265
  5. Step 5: Solve for x
    x = 6,178,758,892,878,265/79,211,791.80
  6. Step 6: Final answer
    x = 78,003,018.90

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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.