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Finding the Fourth Proportional to 8,636,123.80, 12,948,280.80 and 4,089,350.80

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Solution

The fourth proportional to 8,636,123.80, 12,948,280.80 and 4,089,350.80 is: 6,131,230.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636,123.80 : 12,948,280.80 = 4,089,350.80 : x
  2. Step 2: Convert to fraction form
    8,636,123.80/12,948,280.80 = 4,089,350.80/x
  3. Step 3: Cross multiply
    8,636,123.80x = 12,948,280.80 × 4,089,350.80
  4. Step 4: Simplify right side
    8,636,123.80x = 52,950,062,448,104.64
  5. Step 5: Solve for x
    x = 52,950,062,448,104.64/8,636,123.80
  6. Step 6: Final answer
    x = 6,131,230.13

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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.