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Finding the Fourth Proportional to 65,990.20, 99,007.04 and 43,890.52

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Solution

The fourth proportional to 65,990.20, 99,007.04 and 43,890.52 is: 65,850.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,990.20 : 99,007.04 = 43,890.52 : x
  2. Step 2: Convert to fraction form
    65,990.20/99,007.04 = 43,890.52/x
  3. Step 3: Cross multiply
    65,990.20x = 99,007.04 × 43,890.52
  4. Step 4: Simplify right side
    65,990.20x = 4,345,470,469.26
  5. Step 5: Solve for x
    x = 4,345,470,469.26/65,990.20
  6. Step 6: Final answer
    x = 65,850.24

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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.