Home / 90,528-135,795.66-43,118.70

Finding the Fourth Proportional to 90,528, 135,795.66 and 43,118.70

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Solution

The fourth proportional to 90,528, 135,795.66 and 43,118.70 is: 64,679.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,528 : 135,795.66 = 43,118.70 : x
  2. Step 2: Convert to fraction form
    90,528/135,795.66 = 43,118.70/x
  3. Step 3: Cross multiply
    90,528x = 135,795.66 × 43,118.70
  4. Step 4: Simplify right side
    90,528x = 5,855,332,324.84
  5. Step 5: Solve for x
    x = 5,855,332,324.84/90,528
  6. Step 6: Final answer
    x = 64,679.79

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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.