Home / 68,200,417.80-102,300,626.70-40,990,638.60

Finding the Fourth Proportional to 68,200,417.80, 102,300,626.70 and 40,990,638.60

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Solution

The fourth proportional to 68,200,417.80, 102,300,626.70 and 40,990,638.60 is: 61,485,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,200,417.80 : 102,300,626.70 = 40,990,638.60 : x
  2. Step 2: Convert to fraction form
    68,200,417.80/102,300,626.70 = 40,990,638.60/x
  3. Step 3: Cross multiply
    68,200,417.80x = 102,300,626.70 × 40,990,638.60
  4. Step 4: Simplify right side
    68,200,417.80x = 4,193,368,017,613,211
  5. Step 5: Solve for x
    x = 4,193,368,017,613,211/68,200,417.80
  6. Step 6: Final answer
    x = 61,485,957.90

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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.