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Finding the Fourth Proportional to 272,055.08, 408,081.80 and 72,375.50

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Solution

The fourth proportional to 272,055.08, 408,081.80 and 72,375.50 is: 108,563.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,055.08 : 408,081.80 = 72,375.50 : x
  2. Step 2: Convert to fraction form
    272,055.08/408,081.80 = 72,375.50/x
  3. Step 3: Cross multiply
    272,055.08x = 408,081.80 × 72,375.50
  4. Step 4: Simplify right side
    272,055.08x = 29,535,124,315.90
  5. Step 5: Solve for x
    x = 29,535,124,315.90/272,055.08
  6. Step 6: Final answer
    x = 108,563.03

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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.