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Finding the Fourth Proportional to 28,443,073.20, 42,664,609.80 and 28,443,073.20

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Solution

The fourth proportional to 28,443,073.20, 42,664,609.80 and 28,443,073.20 is: 42,664,609.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443,073.20 : 42,664,609.80 = 28,443,073.20 : x
  2. Step 2: Convert to fraction form
    28,443,073.20/42,664,609.80 = 28,443,073.20/x
  3. Step 3: Cross multiply
    28,443,073.20x = 42,664,609.80 × 28,443,073.20
  4. Step 4: Simplify right side
    28,443,073.20x = 1,213,512,619,590,837.25
  5. Step 5: Solve for x
    x = 1,213,512,619,590,837.25/28,443,073.20
  6. Step 6: Final answer
    x = 42,664,609.80

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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.