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Finding the Fourth Proportional to 84,902.88, 117,131.76 and 51,310.56

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Solution

The fourth proportional to 84,902.88, 117,131.76 and 51,310.56 is: 70,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,902.88 : 117,131.76 = 51,310.56 : x
  2. Step 2: Convert to fraction form
    84,902.88/117,131.76 = 51,310.56/x
  3. Step 3: Cross multiply
    84,902.88x = 117,131.76 × 51,310.56
  4. Step 4: Simplify right side
    84,902.88x = 6,010,096,199.39
  5. Step 5: Solve for x
    x = 6,010,096,199.39/84,902.88
  6. Step 6: Final answer
    x = 70,787.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.