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Finding the Fourth Proportional to 53,207.03, 79,801.81 and 21,615.82

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Solution

The fourth proportional to 53,207.03, 79,801.81 and 21,615.82 is: 32,420.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,207.03 : 79,801.81 = 21,615.82 : x
  2. Step 2: Convert to fraction form
    53,207.03/79,801.81 = 21,615.82/x
  3. Step 3: Cross multiply
    53,207.03x = 79,801.81 × 21,615.82
  4. Step 4: Simplify right side
    53,207.03x = 1,724,981,363.20
  5. Step 5: Solve for x
    x = 1,724,981,363.20/53,207.03
  6. Step 6: Final answer
    x = 32,420.18

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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.