Home / 74,758.42-112,137.61-51,313.78

Finding the Fourth Proportional to 74,758.42, 112,137.61 and 51,313.78

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Solution

The fourth proportional to 74,758.42, 112,137.61 and 51,313.78 is: 76,970.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,758.42 : 112,137.61 = 51,313.78 : x
  2. Step 2: Convert to fraction form
    74,758.42/112,137.61 = 51,313.78/x
  3. Step 3: Cross multiply
    74,758.42x = 112,137.61 × 51,313.78
  4. Step 4: Simplify right side
    74,758.42x = 5,754,204,649.27
  5. Step 5: Solve for x
    x = 5,754,204,649.27/74,758.42
  6. Step 6: Final answer
    x = 76,970.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.