Home / 90,357.12-135,496.80-43,623.36

Finding the Fourth Proportional to 90,357.12, 135,496.80 and 43,623.36

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Solution

The fourth proportional to 90,357.12, 135,496.80 and 43,623.36 is: 65,416.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,357.12 : 135,496.80 = 43,623.36 : x
  2. Step 2: Convert to fraction form
    90,357.12/135,496.80 = 43,623.36/x
  3. Step 3: Cross multiply
    90,357.12x = 135,496.80 × 43,623.36
  4. Step 4: Simplify right side
    90,357.12x = 5,910,825,685.25
  5. Step 5: Solve for x
    x = 5,910,825,685.25/90,357.12
  6. Step 6: Final answer
    x = 65,416.27

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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.