Home / 90,318.78-135,491.37-43,533.18

Finding the Fourth Proportional to 90,318.78, 135,491.37 and 43,533.18

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Solution

The fourth proportional to 90,318.78, 135,491.37 and 43,533.18 is: 65,306.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,318.78 : 135,491.37 = 43,533.18 : x
  2. Step 2: Convert to fraction form
    90,318.78/135,491.37 = 43,533.18/x
  3. Step 3: Cross multiply
    90,318.78x = 135,491.37 × 43,533.18
  4. Step 4: Simplify right side
    90,318.78x = 5,898,370,198.66
  5. Step 5: Solve for x
    x = 5,898,370,198.66/90,318.78
  6. Step 6: Final answer
    x = 65,306.13

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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.