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Finding the Fourth Proportional to 84,546.79, 126,819.29 and 21,365.62

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Solution

The fourth proportional to 84,546.79, 126,819.29 and 21,365.62 is: 32,048.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,546.79 : 126,819.29 = 21,365.62 : x
  2. Step 2: Convert to fraction form
    84,546.79/126,819.29 = 21,365.62/x
  3. Step 3: Cross multiply
    84,546.79x = 126,819.29 × 21,365.62
  4. Step 4: Simplify right side
    84,546.79x = 2,709,572,495.18
  5. Step 5: Solve for x
    x = 2,709,572,495.18/84,546.79
  6. Step 6: Final answer
    x = 32,048.20

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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.