Home / 87,116.64-120,288.72-66,941.70

Finding the Fourth Proportional to 87,116.64, 120,288.72 and 66,941.70

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Solution

The fourth proportional to 87,116.64, 120,288.72 and 66,941.70 is: 92,431.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,116.64 : 120,288.72 = 66,941.70 : x
  2. Step 2: Convert to fraction form
    87,116.64/120,288.72 = 66,941.70/x
  3. Step 3: Cross multiply
    87,116.64x = 120,288.72 × 66,941.70
  4. Step 4: Simplify right side
    87,116.64x = 8,052,331,407.62
  5. Step 5: Solve for x
    x = 8,052,331,407.62/87,116.64
  6. Step 6: Final answer
    x = 92,431.61

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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.