Home / 87,941.64-121,377.80-80,856.84

Finding the Fourth Proportional to 87,941.64, 121,377.80 and 80,856.84

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Solution

The fourth proportional to 87,941.64, 121,377.80 and 80,856.84 is: 111,599.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,941.64 : 121,377.80 = 80,856.84 : x
  2. Step 2: Convert to fraction form
    87,941.64/121,377.80 = 80,856.84/x
  3. Step 3: Cross multiply
    87,941.64x = 121,377.80 × 80,856.84
  4. Step 4: Simplify right side
    87,941.64x = 9,814,225,354.15
  5. Step 5: Solve for x
    x = 9,814,225,354.15/87,941.64
  6. Step 6: Final answer
    x = 111,599.30

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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.