Home / 80,661,804.60-120,992,706.90-66,490,044.60

Finding the Fourth Proportional to 80,661,804.60, 120,992,706.90 and 66,490,044.60

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Solution

The fourth proportional to 80,661,804.60, 120,992,706.90 and 66,490,044.60 is: 99,735,066.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,661,804.60 : 120,992,706.90 = 66,490,044.60 : x
  2. Step 2: Convert to fraction form
    80,661,804.60/120,992,706.90 = 66,490,044.60/x
  3. Step 3: Cross multiply
    80,661,804.60x = 120,992,706.90 × 66,490,044.60
  4. Step 4: Simplify right side
    80,661,804.60x = 8,044,810,478,055,728
  5. Step 5: Solve for x
    x = 8,044,810,478,055,728/80,661,804.60
  6. Step 6: Final answer
    x = 99,735,066.90

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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.