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Finding the Fourth Proportional to 8,365,816.80, 12,530,062.80 and 6,872,824.80

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Solution

The fourth proportional to 8,365,816.80, 12,530,062.80 and 6,872,824.80 is: 10,293,905.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,365,816.80 : 12,530,062.80 = 6,872,824.80 : x
  2. Step 2: Convert to fraction form
    8,365,816.80/12,530,062.80 = 6,872,824.80/x
  3. Step 3: Cross multiply
    8,365,816.80x = 12,530,062.80 × 6,872,824.80
  4. Step 4: Simplify right side
    8,365,816.80x = 86,116,926,357,397.44
  5. Step 5: Solve for x
    x = 86,116,926,357,397.44/8,365,816.80
  6. Step 6: Final answer
    x = 10,293,905.36

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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.