Home / 71,865.84-99,170.55-40,029.06

Finding the Fourth Proportional to 71,865.84, 99,170.55 and 40,029.06

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Solution

The fourth proportional to 71,865.84, 99,170.55 and 40,029.06 is: 55,237.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,865.84 : 99,170.55 = 40,029.06 : x
  2. Step 2: Convert to fraction form
    71,865.84/99,170.55 = 40,029.06/x
  3. Step 3: Cross multiply
    71,865.84x = 99,170.55 × 40,029.06
  4. Step 4: Simplify right side
    71,865.84x = 3,969,703,896.18
  5. Step 5: Solve for x
    x = 3,969,703,896.18/71,865.84
  6. Step 6: Final answer
    x = 55,237.70

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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.