Home / 81,126.14-111,942.95-45,311.58

Finding the Fourth Proportional to 81,126.14, 111,942.95 and 45,311.58

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Solution

The fourth proportional to 81,126.14, 111,942.95 and 45,311.58 is: 62,523.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,126.14 : 111,942.95 = 45,311.58 : x
  2. Step 2: Convert to fraction form
    81,126.14/111,942.95 = 45,311.58/x
  3. Step 3: Cross multiply
    81,126.14x = 111,942.95 × 45,311.58
  4. Step 4: Simplify right side
    81,126.14x = 5,072,311,707.80
  5. Step 5: Solve for x
    x = 5,072,311,707.80/81,126.14
  6. Step 6: Final answer
    x = 62,523.77

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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.