Home / 90,318.88-135,482.64-43,611.04

Finding the Fourth Proportional to 90,318.88, 135,482.64 and 43,611.04

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Solution

The fourth proportional to 90,318.88, 135,482.64 and 43,611.04 is: 65,418.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,318.88 : 135,482.64 = 43,611.04 : x
  2. Step 2: Convert to fraction form
    90,318.88/135,482.64 = 43,611.04/x
  3. Step 3: Cross multiply
    90,318.88x = 135,482.64 × 43,611.04
  4. Step 4: Simplify right side
    90,318.88x = 5,908,538,832.35
  5. Step 5: Solve for x
    x = 5,908,538,832.35/90,318.88
  6. Step 6: Final answer
    x = 65,418.65

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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.