Home / 87,905.96-121,280.38-49,659.92

Finding the Fourth Proportional to 87,905.96, 121,280.38 and 49,659.92

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Solution

The fourth proportional to 87,905.96, 121,280.38 and 49,659.92 is: 68,513.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,905.96 : 121,280.38 = 49,659.92 : x
  2. Step 2: Convert to fraction form
    87,905.96/121,280.38 = 49,659.92/x
  3. Step 3: Cross multiply
    87,905.96x = 121,280.38 × 49,659.92
  4. Step 4: Simplify right side
    87,905.96x = 6,022,773,237.82
  5. Step 5: Solve for x
    x = 6,022,773,237.82/87,905.96
  6. Step 6: Final answer
    x = 68,513.83

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1.5x scale

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.