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Finding the Fourth Proportional to 65,563.70, 98,345.39 and 28,099.47

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Solution

The fourth proportional to 65,563.70, 98,345.39 and 28,099.47 is: 42,149.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,563.70 : 98,345.39 = 28,099.47 : x
  2. Step 2: Convert to fraction form
    65,563.70/98,345.39 = 28,099.47/x
  3. Step 3: Cross multiply
    65,563.70x = 98,345.39 × 28,099.47
  4. Step 4: Simplify right side
    65,563.70x = 2,763,453,722.30
  5. Step 5: Solve for x
    x = 2,763,453,722.30/65,563.70
  6. Step 6: Final answer
    x = 42,149.15

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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.