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Finding the Fourth Proportional to 65,930.20, 98,968.20 and 40,998.40

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Solution

The fourth proportional to 65,930.20, 98,968.20 and 40,998.40 is: 61,542.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,930.20 : 98,968.20 = 40,998.40 : x
  2. Step 2: Convert to fraction form
    65,930.20/98,968.20 = 40,998.40/x
  3. Step 3: Cross multiply
    65,930.20x = 98,968.20 × 40,998.40
  4. Step 4: Simplify right side
    65,930.20x = 4,057,537,850.88
  5. Step 5: Solve for x
    x = 4,057,537,850.88/65,930.20
  6. Step 6: Final answer
    x = 61,542.93

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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.