Home / 71,837.10-99,131.22-40,000.32

Finding the Fourth Proportional to 71,837.10, 99,131.22 and 40,000.32

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Solution

The fourth proportional to 71,837.10, 99,131.22 and 40,000.32 is: 55,198.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,837.10 : 99,131.22 = 40,000.32 : x
  2. Step 2: Convert to fraction form
    71,837.10/99,131.22 = 40,000.32/x
  3. Step 3: Cross multiply
    71,837.10x = 99,131.22 × 40,000.32
  4. Step 4: Simplify right side
    71,837.10x = 3,965,280,521.99
  5. Step 5: Solve for x
    x = 3,965,280,521.99/71,837.10
  6. Step 6: Final answer
    x = 55,198.23

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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.