Home / 28,473,405.12-42,717,387.96-8,278,647.12

Finding the Fourth Proportional to 28,473,405.12, 42,717,387.96 and 8,278,647.12

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Solution

The fourth proportional to 28,473,405.12, 42,717,387.96 and 8,278,647.12 is: 12,420,087.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473,405.12 : 42,717,387.96 = 8,278,647.12 : x
  2. Step 2: Convert to fraction form
    28,473,405.12/42,717,387.96 = 8,278,647.12/x
  3. Step 3: Cross multiply
    28,473,405.12x = 42,717,387.96 × 8,278,647.12
  4. Step 4: Simplify right side
    28,473,405.12x = 353,642,180,808,976.69
  5. Step 5: Solve for x
    x = 353,642,180,808,976.69/28,473,405.12
  6. Step 6: Final answer
    x = 12,420,087.42

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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.