Home / 71,910.83-99,240.35-40,079.96

Finding the Fourth Proportional to 71,910.83, 99,240.35 and 40,079.96

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Solution

The fourth proportional to 71,910.83, 99,240.35 and 40,079.96 is: 55,312.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,910.83 : 99,240.35 = 40,079.96 : x
  2. Step 2: Convert to fraction form
    71,910.83/99,240.35 = 40,079.96/x
  3. Step 3: Cross multiply
    71,910.83x = 99,240.35 × 40,079.96
  4. Step 4: Simplify right side
    71,910.83x = 3,977,548,933.94
  5. Step 5: Solve for x
    x = 3,977,548,933.94/71,910.83
  6. Step 6: Final answer
    x = 55,312.24

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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.