Home / 87,011.63-120,133.97-66,832.50

Finding the Fourth Proportional to 87,011.63, 120,133.97 and 66,832.50

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Solution

The fourth proportional to 87,011.63, 120,133.97 and 66,832.50 is: 92,273.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,011.63 : 120,133.97 = 66,832.50 : x
  2. Step 2: Convert to fraction form
    87,011.63/120,133.97 = 66,832.50/x
  3. Step 3: Cross multiply
    87,011.63x = 120,133.97 × 66,832.50
  4. Step 4: Simplify right side
    87,011.63x = 8,028,853,215.86
  5. Step 5: Solve for x
    x = 8,028,853,215.86/87,011.63
  6. Step 6: Final answer
    x = 92,273.34

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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.