Home / 83,571.32-115,076.22-72,219.98

Finding the Fourth Proportional to 83,571.32, 115,076.22 and 72,219.98

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Solution

The fourth proportional to 83,571.32, 115,076.22 and 72,219.98 is: 99,445.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,571.32 : 115,076.22 = 72,219.98 : x
  2. Step 2: Convert to fraction form
    83,571.32/115,076.22 = 72,219.98/x
  3. Step 3: Cross multiply
    83,571.32x = 115,076.22 × 72,219.98
  4. Step 4: Simplify right side
    83,571.32x = 8,310,802,306.88
  5. Step 5: Solve for x
    x = 8,310,802,306.88/83,571.32
  6. Step 6: Final answer
    x = 99,445.63

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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.