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Finding the Fourth Proportional to 89,907.49, 124,070.83 and 49,621.20

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Solution

The fourth proportional to 89,907.49, 124,070.83 and 49,621.20 is: 68,476.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,907.49 : 124,070.83 = 49,621.20 : x
  2. Step 2: Convert to fraction form
    89,907.49/124,070.83 = 49,621.20/x
  3. Step 3: Cross multiply
    89,907.49x = 124,070.83 × 49,621.20
  4. Step 4: Simplify right side
    89,907.49x = 6,156,543,469.60
  5. Step 5: Solve for x
    x = 6,156,543,469.60/89,907.49
  6. Step 6: Final answer
    x = 68,476.42

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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.