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Finding the Fourth Proportional to 65,538.68, 98,307.72 and 20,563.33

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Solution

The fourth proportional to 65,538.68, 98,307.72 and 20,563.33 is: 30,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,538.68 : 98,307.72 = 20,563.33 : x
  2. Step 2: Convert to fraction form
    65,538.68/98,307.72 = 20,563.33/x
  3. Step 3: Cross multiply
    65,538.68x = 98,307.72 × 20,563.33
  4. Step 4: Simplify right side
    65,538.68x = 2,021,533,985.09
  5. Step 5: Solve for x
    x = 2,021,533,985.09/65,538.68
  6. Step 6: Final answer
    x = 30,844.90

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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.