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Finding the Fourth Proportional to 52,651,271.20, 78,976,906.80 and 43,693,319.20

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Solution

The fourth proportional to 52,651,271.20, 78,976,906.80 and 43,693,319.20 is: 65,539,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,651,271.20 : 78,976,906.80 = 43,693,319.20 : x
  2. Step 2: Convert to fraction form
    52,651,271.20/78,976,906.80 = 43,693,319.20/x
  3. Step 3: Cross multiply
    52,651,271.20x = 78,976,906.80 × 43,693,319.20
  4. Step 4: Simplify right side
    52,651,271.20x = 3,450,763,198,241,050.50
  5. Step 5: Solve for x
    x = 3,450,763,198,241,050.50/52,651,271.20
  6. Step 6: Final answer
    x = 65,539,978.80

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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.