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Finding the Fourth Proportional to 68,999.80, 103,499.70 and 48,004.60

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Solution

The fourth proportional to 68,999.80, 103,499.70 and 48,004.60 is: 72,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,999.80 : 103,499.70 = 48,004.60 : x
  2. Step 2: Convert to fraction form
    68,999.80/103,499.70 = 48,004.60/x
  3. Step 3: Cross multiply
    68,999.80x = 103,499.70 × 48,004.60
  4. Step 4: Simplify right side
    68,999.80x = 4,968,461,698.62
  5. Step 5: Solve for x
    x = 4,968,461,698.62/68,999.80
  6. Step 6: Final answer
    x = 72,006.90

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1.5x scale

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.