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Finding the Fourth Proportional to 8,054,800.80, 12,088,810.80 and 7,991,815.20

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Solution

The fourth proportional to 8,054,800.80, 12,088,810.80 and 7,991,815.20 is: 11,994,280.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,054,800.80 : 12,088,810.80 = 7,991,815.20 : x
  2. Step 2: Convert to fraction form
    8,054,800.80/12,088,810.80 = 7,991,815.20/x
  3. Step 3: Cross multiply
    8,054,800.80x = 12,088,810.80 × 7,991,815.20
  4. Step 4: Simplify right side
    8,054,800.80x = 96,611,541,901,364.17
  5. Step 5: Solve for x
    x = 96,611,541,901,364.17/8,054,800.80
  6. Step 6: Final answer
    x = 11,994,280.72

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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.