Home / 87,120.96-120,244.32-55,327.20

Finding the Fourth Proportional to 87,120.96, 120,244.32 and 55,327.20

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Solution

The fourth proportional to 87,120.96, 120,244.32 and 55,327.20 is: 76,362.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,120.96 : 120,244.32 = 55,327.20 : x
  2. Step 2: Convert to fraction form
    87,120.96/120,244.32 = 55,327.20/x
  3. Step 3: Cross multiply
    87,120.96x = 120,244.32 × 55,327.20
  4. Step 4: Simplify right side
    87,120.96x = 6,652,781,541.50
  5. Step 5: Solve for x
    x = 6,652,781,541.50/87,120.96
  6. Step 6: Final answer
    x = 76,362.58

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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.