Home / 87,393.37-120,612.11-53,421.75

Finding the Fourth Proportional to 87,393.37, 120,612.11 and 53,421.75

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Solution

The fourth proportional to 87,393.37, 120,612.11 and 53,421.75 is: 73,727.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,393.37 : 120,612.11 = 53,421.75 : x
  2. Step 2: Convert to fraction form
    87,393.37/120,612.11 = 53,421.75/x
  3. Step 3: Cross multiply
    87,393.37x = 120,612.11 × 53,421.75
  4. Step 4: Simplify right side
    87,393.37x = 6,443,309,577.97
  5. Step 5: Solve for x
    x = 6,443,309,577.97/87,393.37
  6. Step 6: Final answer
    x = 73,727.67

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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.