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Finding the Fourth Proportional to 53,389, 80,083.48 and 21,813.96

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Solution

The fourth proportional to 53,389, 80,083.48 and 21,813.96 is: 32,720.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,389 : 80,083.48 = 21,813.96 : x
  2. Step 2: Convert to fraction form
    53,389/80,083.48 = 21,813.96/x
  3. Step 3: Cross multiply
    53,389x = 80,083.48 × 21,813.96
  4. Step 4: Simplify right side
    53,389x = 1,746,937,829.38
  5. Step 5: Solve for x
    x = 1,746,937,829.38/53,389
  6. Step 6: Final answer
    x = 32,720.93

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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.