Home / 87,703.56-121,035.06-49,977

Finding the Fourth Proportional to 87,703.56, 121,035.06 and 49,977

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Solution

The fourth proportional to 87,703.56, 121,035.06 and 49,977 is: 68,970.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,703.56 : 121,035.06 = 49,977 : x
  2. Step 2: Convert to fraction form
    87,703.56/121,035.06 = 49,977/x
  3. Step 3: Cross multiply
    87,703.56x = 121,035.06 × 49,977
  4. Step 4: Simplify right side
    87,703.56x = 6,048,969,193.62
  5. Step 5: Solve for x
    x = 6,048,969,193.62/87,703.56
  6. Step 6: Final answer
    x = 68,970.62

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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.