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Finding the Fourth Proportional to 89,649.81, 123,719.81 and 49,366.35

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Solution

The fourth proportional to 89,649.81, 123,719.81 and 49,366.35 is: 68,127.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,649.81 : 123,719.81 = 49,366.35 : x
  2. Step 2: Convert to fraction form
    89,649.81/123,719.81 = 49,366.35/x
  3. Step 3: Cross multiply
    89,649.81x = 123,719.81 × 49,366.35
  4. Step 4: Simplify right side
    89,649.81x = 6,107,595,195.56
  5. Step 5: Solve for x
    x = 6,107,595,195.56/89,649.81
  6. Step 6: Final answer
    x = 68,127.25

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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.