Home / 28,473,405.87-42,717,389.09-8,278,647.87

Finding the Fourth Proportional to 28,473,405.87, 42,717,389.09 and 8,278,647.87

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Solution

The fourth proportional to 28,473,405.87, 42,717,389.09 and 8,278,647.87 is: 12,420,088.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473,405.87 : 42,717,389.09 = 8,278,647.87 : x
  2. Step 2: Convert to fraction form
    28,473,405.87/42,717,389.09 = 8,278,647.87/x
  3. Step 3: Cross multiply
    28,473,405.87x = 42,717,389.09 × 8,278,647.87
  4. Step 4: Simplify right side
    28,473,405.87x = 353,642,222,160,496.50
  5. Step 5: Solve for x
    x = 353,642,222,160,496.50/28,473,405.87
  6. Step 6: Final answer
    x = 12,420,088.55

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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.