Home / 90,743.92-135,928.61-53,189.95

Finding the Fourth Proportional to 90,743.92, 135,928.61 and 53,189.95

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Solution

The fourth proportional to 90,743.92, 135,928.61 and 53,189.95 is: 79,675.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,743.92 : 135,928.61 = 53,189.95 : x
  2. Step 2: Convert to fraction form
    90,743.92/135,928.61 = 53,189.95/x
  3. Step 3: Cross multiply
    90,743.92x = 135,928.61 × 53,189.95
  4. Step 4: Simplify right side
    90,743.92x = 7,230,035,969.47
  5. Step 5: Solve for x
    x = 7,230,035,969.47/90,743.92
  6. Step 6: Final answer
    x = 79,675.16

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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.