Home / 28,328,555.20-42,492,832.80-8,131,172.80

Finding the Fourth Proportional to 28,328,555.20, 42,492,832.80 and 8,131,172.80

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Solution

The fourth proportional to 28,328,555.20, 42,492,832.80 and 8,131,172.80 is: 12,196,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328,555.20 : 42,492,832.80 = 8,131,172.80 : x
  2. Step 2: Convert to fraction form
    28,328,555.20/42,492,832.80 = 8,131,172.80/x
  3. Step 3: Cross multiply
    28,328,555.20x = 42,492,832.80 × 8,131,172.80
  4. Step 4: Simplify right side
    28,328,555.20x = 345,516,566,258,307.81
  5. Step 5: Solve for x
    x = 345,516,566,258,307.81/28,328,555.20
  6. Step 6: Final answer
    x = 12,196,759.20

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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.