Home / 90,509.60-135,720.66-27,318.06

Finding the Fourth Proportional to 90,509.60, 135,720.66 and 27,318.06

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Solution

The fourth proportional to 90,509.60, 135,720.66 and 27,318.06 is: 40,963.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,509.60 : 135,720.66 = 27,318.06 : x
  2. Step 2: Convert to fraction form
    90,509.60/135,720.66 = 27,318.06/x
  3. Step 3: Cross multiply
    90,509.60x = 135,720.66 × 27,318.06
  4. Step 4: Simplify right side
    90,509.60x = 3,707,625,235.56
  5. Step 5: Solve for x
    x = 3,707,625,235.56/90,509.60
  6. Step 6: Final answer
    x = 40,963.89

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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.