Home / 90,109.16-135,130.14-30,928.04

Finding the Fourth Proportional to 90,109.16, 135,130.14 and 30,928.04

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Solution

The fourth proportional to 90,109.16, 135,130.14 and 30,928.04 is: 46,380.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,109.16 : 135,130.14 = 30,928.04 : x
  2. Step 2: Convert to fraction form
    90,109.16/135,130.14 = 30,928.04/x
  3. Step 3: Cross multiply
    90,109.16x = 135,130.14 × 30,928.04
  4. Step 4: Simplify right side
    90,109.16x = 4,179,310,375.13
  5. Step 5: Solve for x
    x = 4,179,310,375.13/90,109.16
  6. Step 6: Final answer
    x = 46,380.53

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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.