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Finding the Fourth Proportional to 8,737,801.20, 13,106,701.80 and 8,345,890.80

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Solution

The fourth proportional to 8,737,801.20, 13,106,701.80 and 8,345,890.80 is: 12,518,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,737,801.20 : 13,106,701.80 = 8,345,890.80 : x
  2. Step 2: Convert to fraction form
    8,737,801.20/13,106,701.80 = 8,345,890.80/x
  3. Step 3: Cross multiply
    8,737,801.20x = 13,106,701.80 × 8,345,890.80
  4. Step 4: Simplify right side
    8,737,801.20x = 109,387,101,970,963.44
  5. Step 5: Solve for x
    x = 109,387,101,970,963.44/8,737,801.20
  6. Step 6: Final answer
    x = 12,518,836.20

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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.