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Finding the Fourth Proportional to 84,787.71, 116,229.03 and 84,003.63

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Solution

The fourth proportional to 84,787.71, 116,229.03 and 84,003.63 is: 115,154.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,787.71 : 116,229.03 = 84,003.63 : x
  2. Step 2: Convert to fraction form
    84,787.71/116,229.03 = 84,003.63/x
  3. Step 3: Cross multiply
    84,787.71x = 116,229.03 × 84,003.63
  4. Step 4: Simplify right side
    84,787.71x = 9,763,660,431.38
  5. Step 5: Solve for x
    x = 9,763,660,431.38/84,787.71
  6. Step 6: Final answer
    x = 115,154.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.