Home / 272,620.14-408,946.55-85,631.64

Finding the Fourth Proportional to 272,620.14, 408,946.55 and 85,631.64

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Solution

The fourth proportional to 272,620.14, 408,946.55 and 85,631.64 is: 128,452.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,620.14 : 408,946.55 = 85,631.64 : x
  2. Step 2: Convert to fraction form
    272,620.14/408,946.55 = 85,631.64/x
  3. Step 3: Cross multiply
    272,620.14x = 408,946.55 × 85,631.64
  4. Step 4: Simplify right side
    272,620.14x = 35,018,763,748.84
  5. Step 5: Solve for x
    x = 35,018,763,748.84/272,620.14
  6. Step 6: Final answer
    x = 128,452.59

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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.