Home / 90,441.20-135,623.40-43,708.40

Finding the Fourth Proportional to 90,441.20, 135,623.40 and 43,708.40

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Solution

The fourth proportional to 90,441.20, 135,623.40 and 43,708.40 is: 65,544.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,441.20 : 135,623.40 = 43,708.40 : x
  2. Step 2: Convert to fraction form
    90,441.20/135,623.40 = 43,708.40/x
  3. Step 3: Cross multiply
    90,441.20x = 135,623.40 × 43,708.40
  4. Step 4: Simplify right side
    90,441.20x = 5,927,881,816.56
  5. Step 5: Solve for x
    x = 5,927,881,816.56/90,441.20
  6. Step 6: Final answer
    x = 65,544.04

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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.