Home / 66,279.12-91,499.07-51,137.76

Finding the Fourth Proportional to 66,279.12, 91,499.07 and 51,137.76

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Solution

The fourth proportional to 66,279.12, 91,499.07 and 51,137.76 is: 70,596.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,279.12 : 91,499.07 = 51,137.76 : x
  2. Step 2: Convert to fraction form
    66,279.12/91,499.07 = 51,137.76/x
  3. Step 3: Cross multiply
    66,279.12x = 91,499.07 × 51,137.76
  4. Step 4: Simplify right side
    66,279.12x = 4,679,057,481.88
  5. Step 5: Solve for x
    x = 4,679,057,481.88/66,279.12
  6. Step 6: Final answer
    x = 70,596.25

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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.