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Finding the Fourth Proportional to 28,978,090.70, 43,467,136.05 and 28,552,937.90

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Solution

The fourth proportional to 28,978,090.70, 43,467,136.05 and 28,552,937.90 is: 42,829,406.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,090.70 : 43,467,136.05 = 28,552,937.90 : x
  2. Step 2: Convert to fraction form
    28,978,090.70/43,467,136.05 = 28,552,937.90/x
  3. Step 3: Cross multiply
    28,978,090.70x = 43,467,136.05 × 28,552,937.90
  4. Step 4: Simplify right side
    28,978,090.70x = 1,241,114,436,326,501.25
  5. Step 5: Solve for x
    x = 1,241,114,436,326,501.25/28,978,090.70
  6. Step 6: Final answer
    x = 42,829,406.85

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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.