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Finding the Fourth Proportional to 65,720.45, 98,580.68 and 23,620.70

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Solution

The fourth proportional to 65,720.45, 98,580.68 and 23,620.70 is: 35,431.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,720.45 : 98,580.68 = 23,620.70 : x
  2. Step 2: Convert to fraction form
    65,720.45/98,580.68 = 23,620.70/x
  3. Step 3: Cross multiply
    65,720.45x = 98,580.68 × 23,620.70
  4. Step 4: Simplify right side
    65,720.45x = 2,328,544,668.08
  5. Step 5: Solve for x
    x = 2,328,544,668.08/65,720.45
  6. Step 6: Final answer
    x = 35,431.05

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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.