Home / 72,544.79-100,121.58-40,715.43

Finding the Fourth Proportional to 72,544.79, 100,121.58 and 40,715.43

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Solution

The fourth proportional to 72,544.79, 100,121.58 and 40,715.43 is: 56,192.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,544.79 : 100,121.58 = 40,715.43 : x
  2. Step 2: Convert to fraction form
    72,544.79/100,121.58 = 40,715.43/x
  3. Step 3: Cross multiply
    72,544.79x = 100,121.58 × 40,715.43
  4. Step 4: Simplify right side
    72,544.79x = 4,076,493,181.98
  5. Step 5: Solve for x
    x = 4,076,493,181.98/72,544.79
  6. Step 6: Final answer
    x = 56,192.78

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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.