Home / 90,516.80-135,775.20-43,808.96

Finding the Fourth Proportional to 90,516.80, 135,775.20 and 43,808.96

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Solution

The fourth proportional to 90,516.80, 135,775.20 and 43,808.96 is: 65,713.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,516.80 : 135,775.20 = 43,808.96 : x
  2. Step 2: Convert to fraction form
    90,516.80/135,775.20 = 43,808.96/x
  3. Step 3: Cross multiply
    90,516.80x = 135,775.20 × 43,808.96
  4. Step 4: Simplify right side
    90,516.80x = 5,948,170,305.79
  5. Step 5: Solve for x
    x = 5,948,170,305.79/90,516.80
  6. Step 6: Final answer
    x = 65,713.44

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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.