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Finding the Fourth Proportional to 82,447,897.20, 123,671,845.80 and 80,558,329.20

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Solution

The fourth proportional to 82,447,897.20, 123,671,845.80 and 80,558,329.20 is: 120,837,493.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,447,897.20 : 123,671,845.80 = 80,558,329.20 : x
  2. Step 2: Convert to fraction form
    82,447,897.20/123,671,845.80 = 80,558,329.20/x
  3. Step 3: Cross multiply
    82,447,897.20x = 123,671,845.80 × 80,558,329.20
  4. Step 4: Simplify right side
    82,447,897.20x = 9,962,797,266,728,038
  5. Step 5: Solve for x
    x = 9,962,797,266,728,038/82,447,897.20
  6. Step 6: Final answer
    x = 120,837,493.80

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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.