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Finding the Fourth Proportional to 90,002.80, 135,004.20 and 27,673.30

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Solution

The fourth proportional to 90,002.80, 135,004.20 and 27,673.30 is: 41,509.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,002.80 : 135,004.20 = 27,673.30 : x
  2. Step 2: Convert to fraction form
    90,002.80/135,004.20 = 27,673.30/x
  3. Step 3: Cross multiply
    90,002.80x = 135,004.20 × 27,673.30
  4. Step 4: Simplify right side
    90,002.80x = 3,736,011,727.86
  5. Step 5: Solve for x
    x = 3,736,011,727.86/90,002.80
  6. Step 6: Final answer
    x = 41,509.95

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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.