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Finding the Fourth Proportional to 67,388.40, 100,904.40 and 53,999.10

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Solution

The fourth proportional to 67,388.40, 100,904.40 and 53,999.10 is: 80,855.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,388.40 : 100,904.40 = 53,999.10 : x
  2. Step 2: Convert to fraction form
    67,388.40/100,904.40 = 53,999.10/x
  3. Step 3: Cross multiply
    67,388.40x = 100,904.40 × 53,999.10
  4. Step 4: Simplify right side
    67,388.40x = 5,448,746,786.04
  5. Step 5: Solve for x
    x = 5,448,746,786.04/67,388.40
  6. Step 6: Final answer
    x = 80,855.86

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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.