Home / 90,389.32-135,489.81-30,373.23

Finding the Fourth Proportional to 90,389.32, 135,489.81 and 30,373.23

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Solution

The fourth proportional to 90,389.32, 135,489.81 and 30,373.23 is: 45,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,389.32 : 135,489.81 = 30,373.23 : x
  2. Step 2: Convert to fraction form
    90,389.32/135,489.81 = 30,373.23/x
  3. Step 3: Cross multiply
    90,389.32x = 135,489.81 × 30,373.23
  4. Step 4: Simplify right side
    90,389.32x = 4,115,263,021.64
  5. Step 5: Solve for x
    x = 4,115,263,021.64/90,389.32
  6. Step 6: Final answer
    x = 45,528.20

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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.