Home / 45,115.64-67,675.68-11,835.78

Finding the Fourth Proportional to 45,115.64, 67,675.68 and 11,835.78

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Solution

The fourth proportional to 45,115.64, 67,675.68 and 11,835.78 is: 17,754.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,115.64 : 67,675.68 = 11,835.78 : x
  2. Step 2: Convert to fraction form
    45,115.64/67,675.68 = 11,835.78/x
  3. Step 3: Cross multiply
    45,115.64x = 67,675.68 × 11,835.78
  4. Step 4: Simplify right side
    45,115.64x = 800,994,459.83
  5. Step 5: Solve for x
    x = 800,994,459.83/45,115.64
  6. Step 6: Final answer
    x = 17,754.25

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1.5x scale

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.