Home / 87,878.37-121,263.48-49,109.03

Finding the Fourth Proportional to 87,878.37, 121,263.48 and 49,109.03

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Solution

The fourth proportional to 87,878.37, 121,263.48 and 49,109.03 is: 67,765.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,878.37 : 121,263.48 = 49,109.03 : x
  2. Step 2: Convert to fraction form
    87,878.37/121,263.48 = 49,109.03/x
  3. Step 3: Cross multiply
    87,878.37x = 121,263.48 × 49,109.03
  4. Step 4: Simplify right side
    87,878.37x = 5,955,132,407.75
  5. Step 5: Solve for x
    x = 5,955,132,407.75/87,878.37
  6. Step 6: Final answer
    x = 67,765.62

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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.