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Finding the Fourth Proportional to 84,821.10, 127,231.65 and 43,349.10

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Solution

The fourth proportional to 84,821.10, 127,231.65 and 43,349.10 is: 65,023.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,821.10 : 127,231.65 = 43,349.10 : x
  2. Step 2: Convert to fraction form
    84,821.10/127,231.65 = 43,349.10/x
  3. Step 3: Cross multiply
    84,821.10x = 127,231.65 × 43,349.10
  4. Step 4: Simplify right side
    84,821.10x = 5,515,377,519.02
  5. Step 5: Solve for x
    x = 5,515,377,519.02/84,821.10
  6. Step 6: Final answer
    x = 65,023.65

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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.