Home / 8,640,697.20-12,961,045.80-8,080,825.20

Finding the Fourth Proportional to 8,640,697.20, 12,961,045.80 and 8,080,825.20

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Solution

The fourth proportional to 8,640,697.20, 12,961,045.80 and 8,080,825.20 is: 12,121,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640,697.20 : 12,961,045.80 = 8,080,825.20 : x
  2. Step 2: Convert to fraction form
    8,640,697.20/12,961,045.80 = 8,080,825.20/x
  3. Step 3: Cross multiply
    8,640,697.20x = 12,961,045.80 × 8,080,825.20
  4. Step 4: Simplify right side
    8,640,697.20x = 104,735,945,518,994.17
  5. Step 5: Solve for x
    x = 104,735,945,518,994.17/8,640,697.20
  6. Step 6: Final answer
    x = 12,121,237.80

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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.