Home / 272,578.10-408,883.55-85,589.60

Finding the Fourth Proportional to 272,578.10, 408,883.55 and 85,589.60

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Solution

The fourth proportional to 272,578.10, 408,883.55 and 85,589.60 is: 128,389.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,578.10 : 408,883.55 = 85,589.60 : x
  2. Step 2: Convert to fraction form
    272,578.10/408,883.55 = 85,589.60/x
  3. Step 3: Cross multiply
    272,578.10x = 408,883.55 × 85,589.60
  4. Step 4: Simplify right side
    272,578.10x = 34,996,177,018.71
  5. Step 5: Solve for x
    x = 34,996,177,018.71/272,578.10
  6. Step 6: Final answer
    x = 128,389.54

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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.