Home / 84,380.72-116,433.96-71,685.20

Finding the Fourth Proportional to 84,380.72, 116,433.96 and 71,685.20

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Solution

The fourth proportional to 84,380.72, 116,433.96 and 71,685.20 is: 98,915.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,380.72 : 116,433.96 = 71,685.20 : x
  2. Step 2: Convert to fraction form
    84,380.72/116,433.96 = 71,685.20/x
  3. Step 3: Cross multiply
    84,380.72x = 116,433.96 × 71,685.20
  4. Step 4: Simplify right side
    84,380.72x = 8,346,591,709.39
  5. Step 5: Solve for x
    x = 8,346,591,709.39/84,380.72
  6. Step 6: Final answer
    x = 98,915.86

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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.