Home / 72,961.83-109,341.09-40,912.16

Finding the Fourth Proportional to 72,961.83, 109,341.09 and 40,912.16

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Solution

The fourth proportional to 72,961.83, 109,341.09 and 40,912.16 is: 61,311.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,961.83 : 109,341.09 = 40,912.16 : x
  2. Step 2: Convert to fraction form
    72,961.83/109,341.09 = 40,912.16/x
  3. Step 3: Cross multiply
    72,961.83x = 109,341.09 × 40,912.16
  4. Step 4: Simplify right side
    72,961.83x = 4,473,379,621.95
  5. Step 5: Solve for x
    x = 4,473,379,621.95/72,961.83
  6. Step 6: Final answer
    x = 61,311.23

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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.