Home / 89,621.89-123,681.74-49,339.40

Finding the Fourth Proportional to 89,621.89, 123,681.74 and 49,339.40

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Solution

The fourth proportional to 89,621.89, 123,681.74 and 49,339.40 is: 68,090.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,621.89 : 123,681.74 = 49,339.40 : x
  2. Step 2: Convert to fraction form
    89,621.89/123,681.74 = 49,339.40/x
  3. Step 3: Cross multiply
    89,621.89x = 123,681.74 × 49,339.40
  4. Step 4: Simplify right side
    89,621.89x = 6,102,383,021.01
  5. Step 5: Solve for x
    x = 6,102,383,021.01/89,621.89
  6. Step 6: Final answer
    x = 68,090.32

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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.