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Finding the Fourth Proportional to 53,411.97, 80,117.07 and 21,815.10

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Solution

The fourth proportional to 53,411.97, 80,117.07 and 21,815.10 is: 32,722.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,411.97 : 80,117.07 = 21,815.10 : x
  2. Step 2: Convert to fraction form
    53,411.97/80,117.07 = 21,815.10/x
  3. Step 3: Cross multiply
    53,411.97x = 80,117.07 × 21,815.10
  4. Step 4: Simplify right side
    53,411.97x = 1,747,761,893.76
  5. Step 5: Solve for x
    x = 1,747,761,893.76/53,411.97
  6. Step 6: Final answer
    x = 32,722.29

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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.