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Finding the Fourth Proportional to 71,836,589.90, 107,768,881.65 and 28,698,452.30

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Solution

The fourth proportional to 71,836,589.90, 107,768,881.65 and 28,698,452.30 is: 43,053,270.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,836,589.90 : 107,768,881.65 = 28,698,452.30 : x
  2. Step 2: Convert to fraction form
    71,836,589.90/107,768,881.65 = 28,698,452.30/x
  3. Step 3: Cross multiply
    71,836,589.90x = 107,768,881.65 × 28,698,452.30
  4. Step 4: Simplify right side
    71,836,589.90x = 3,092,800,109,456,870.50
  5. Step 5: Solve for x
    x = 3,092,800,109,456,870.50/71,836,589.90
  6. Step 6: Final answer
    x = 43,053,270.12

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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.