Home / 80,965.12-111,734.49-45,156.64

Finding the Fourth Proportional to 80,965.12, 111,734.49 and 45,156.64

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Solution

The fourth proportional to 80,965.12, 111,734.49 and 45,156.64 is: 62,317.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,965.12 : 111,734.49 = 45,156.64 : x
  2. Step 2: Convert to fraction form
    80,965.12/111,734.49 = 45,156.64/x
  3. Step 3: Cross multiply
    80,965.12x = 111,734.49 × 45,156.64
  4. Step 4: Simplify right side
    80,965.12x = 5,045,554,140.51
  5. Step 5: Solve for x
    x = 5,045,554,140.51/80,965.12
  6. Step 6: Final answer
    x = 62,317.63

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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.