Home / 8,085,541.20-12,128,311.80-7,424,192.40

Finding the Fourth Proportional to 8,085,541.20, 12,128,311.80 and 7,424,192.40

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Solution

The fourth proportional to 8,085,541.20, 12,128,311.80 and 7,424,192.40 is: 11,136,288.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,541.20 : 12,128,311.80 = 7,424,192.40 : x
  2. Step 2: Convert to fraction form
    8,085,541.20/12,128,311.80 = 7,424,192.40/x
  3. Step 3: Cross multiply
    8,085,541.20x = 12,128,311.80 × 7,424,192.40
  4. Step 4: Simplify right side
    8,085,541.20x = 90,042,920,290,390.33
  5. Step 5: Solve for x
    x = 90,042,920,290,390.33/8,085,541.20
  6. Step 6: Final answer
    x = 11,136,288.60

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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.