Home / 87,983.64-121,388.86-49,739.48

Finding the Fourth Proportional to 87,983.64, 121,388.86 and 49,739.48

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Solution

The fourth proportional to 87,983.64, 121,388.86 and 49,739.48 is: 68,624.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,983.64 : 121,388.86 = 49,739.48 : x
  2. Step 2: Convert to fraction form
    87,983.64/121,388.86 = 49,739.48/x
  3. Step 3: Cross multiply
    87,983.64x = 121,388.86 × 49,739.48
  4. Step 4: Simplify right side
    87,983.64x = 6,037,818,774.19
  5. Step 5: Solve for x
    x = 6,037,818,774.19/87,983.64
  6. Step 6: Final answer
    x = 68,624.33

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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.