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Finding the Fourth Proportional to 52,612,530.80, 78,806,821.80 and 43,654,578.80

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Solution

The fourth proportional to 52,612,530.80, 78,806,821.80 and 43,654,578.80 is: 65,388,958.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,612,530.80 : 78,806,821.80 = 43,654,578.80 : x
  2. Step 2: Convert to fraction form
    52,612,530.80/78,806,821.80 = 43,654,578.80/x
  3. Step 3: Cross multiply
    52,612,530.80x = 78,806,821.80 × 43,654,578.80
  4. Step 4: Simplify right side
    52,612,530.80x = 3,440,278,612,245,657.50
  5. Step 5: Solve for x
    x = 3,440,278,612,245,657.50/52,612,530.80
  6. Step 6: Final answer
    x = 65,388,958.86

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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.