Home / 87,715.44-121,038.75-49,481.01

Finding the Fourth Proportional to 87,715.44, 121,038.75 and 49,481.01

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Solution

The fourth proportional to 87,715.44, 121,038.75 and 49,481.01 is: 68,278.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,715.44 : 121,038.75 = 49,481.01 : x
  2. Step 2: Convert to fraction form
    87,715.44/121,038.75 = 49,481.01/x
  3. Step 3: Cross multiply
    87,715.44x = 121,038.75 × 49,481.01
  4. Step 4: Simplify right side
    87,715.44x = 5,989,119,599.14
  5. Step 5: Solve for x
    x = 5,989,119,599.14/87,715.44
  6. Step 6: Final answer
    x = 68,278.97

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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.