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Finding the Fourth Proportional to 77,263,493.80, 108,328,143.80 and 77,263,493.80

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Solution

The fourth proportional to 77,263,493.80, 108,328,143.80 and 77,263,493.80 is: 108,328,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,263,493.80 : 108,328,143.80 = 77,263,493.80 : x
  2. Step 2: Convert to fraction form
    77,263,493.80/108,328,143.80 = 77,263,493.80/x
  3. Step 3: Cross multiply
    77,263,493.80x = 108,328,143.80 × 77,263,493.80
  4. Step 4: Simplify right side
    77,263,493.80x = 8,369,810,866,856,808
  5. Step 5: Solve for x
    x = 8,369,810,866,856,808/77,263,493.80
  6. Step 6: Final answer
    x = 108,328,143.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.