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Finding the Fourth Proportional to 89,042.87, 122,878 and 50,801.42

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Solution

The fourth proportional to 89,042.87, 122,878 and 50,801.42 is: 70,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,042.87 : 122,878 = 50,801.42 : x
  2. Step 2: Convert to fraction form
    89,042.87/122,878 = 50,801.42/x
  3. Step 3: Cross multiply
    89,042.87x = 122,878 × 50,801.42
  4. Step 4: Simplify right side
    89,042.87x = 6,242,376,886.76
  5. Step 5: Solve for x
    x = 6,242,376,886.76/89,042.87
  6. Step 6: Final answer
    x = 70,105.30

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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.