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Finding the Fourth Proportional to 8,709,076.80, 13,047,868.80 and 7,449,364.80

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Solution

The fourth proportional to 8,709,076.80, 13,047,868.80 and 7,449,364.80 is: 11,160,578.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709,076.80 : 13,047,868.80 = 7,449,364.80 : x
  2. Step 2: Convert to fraction form
    8,709,076.80/13,047,868.80 = 7,449,364.80/x
  3. Step 3: Cross multiply
    8,709,076.80x = 13,047,868.80 × 7,449,364.80
  4. Step 4: Simplify right side
    8,709,076.80x = 97,198,334,553,738.25
  5. Step 5: Solve for x
    x = 97,198,334,553,738.25/8,709,076.80
  6. Step 6: Final answer
    x = 11,160,578.42

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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.