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Finding the Fourth Proportional to 8,651,216.70, 12,978,793.35 and 5,055,132.60

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Solution

The fourth proportional to 8,651,216.70, 12,978,793.35 and 5,055,132.60 is: 7,583,849.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651,216.70 : 12,978,793.35 = 5,055,132.60 : x
  2. Step 2: Convert to fraction form
    8,651,216.70/12,978,793.35 = 5,055,132.60/x
  3. Step 3: Cross multiply
    8,651,216.70x = 12,978,793.35 × 5,055,132.60
  4. Step 4: Simplify right side
    8,651,216.70x = 65,609,521,372,248.20
  5. Step 5: Solve for x
    x = 65,609,521,372,248.20/8,651,216.70
  6. Step 6: Final answer
    x = 7,583,849.03

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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.