Home / 66,381.06-99,519.74-45,268.76

Finding the Fourth Proportional to 66,381.06, 99,519.74 and 45,268.76

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Solution

The fourth proportional to 66,381.06, 99,519.74 and 45,268.76 is: 67,867.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,381.06 : 99,519.74 = 45,268.76 : x
  2. Step 2: Convert to fraction form
    66,381.06/99,519.74 = 45,268.76/x
  3. Step 3: Cross multiply
    66,381.06x = 99,519.74 × 45,268.76
  4. Step 4: Simplify right side
    66,381.06x = 4,505,135,225.32
  5. Step 5: Solve for x
    x = 4,505,135,225.32/66,381.06
  6. Step 6: Final answer
    x = 67,867.78

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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.