Home / 71,912.63-99,242.82-40,081.77

Finding the Fourth Proportional to 71,912.63, 99,242.82 and 40,081.77

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Solution

The fourth proportional to 71,912.63, 99,242.82 and 40,081.77 is: 55,314.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,912.63 : 99,242.82 = 40,081.77 : x
  2. Step 2: Convert to fraction form
    71,912.63/99,242.82 = 40,081.77/x
  3. Step 3: Cross multiply
    71,912.63x = 99,242.82 × 40,081.77
  4. Step 4: Simplify right side
    71,912.63x = 3,977,827,885.39
  5. Step 5: Solve for x
    x = 3,977,827,885.39/71,912.63
  6. Step 6: Final answer
    x = 55,314.73

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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.