Home / 76,880.02-115,311.45-20,725.72

Finding the Fourth Proportional to 76,880.02, 115,311.45 and 20,725.72

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Solution

The fourth proportional to 76,880.02, 115,311.45 and 20,725.72 is: 31,086.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,880.02 : 115,311.45 = 20,725.72 : x
  2. Step 2: Convert to fraction form
    76,880.02/115,311.45 = 20,725.72/x
  3. Step 3: Cross multiply
    76,880.02x = 115,311.45 × 20,725.72
  4. Step 4: Simplify right side
    76,880.02x = 2,389,912,825.49
  5. Step 5: Solve for x
    x = 2,389,912,825.49/76,880.02
  6. Step 6: Final answer
    x = 31,086.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.