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Finding the Fourth Proportional to 98,720.70, 148,081.05 and 36,383.10

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Solution

The fourth proportional to 98,720.70, 148,081.05 and 36,383.10 is: 54,574.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,720.70 : 148,081.05 = 36,383.10 : x
  2. Step 2: Convert to fraction form
    98,720.70/148,081.05 = 36,383.10/x
  3. Step 3: Cross multiply
    98,720.70x = 148,081.05 × 36,383.10
  4. Step 4: Simplify right side
    98,720.70x = 5,387,647,650.26
  5. Step 5: Solve for x
    x = 5,387,647,650.26/98,720.70
  6. Step 6: Final answer
    x = 54,574.65

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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.