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Finding the Fourth Proportional to 90,289.54, 135,411.22 and 37,019.08

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Solution

The fourth proportional to 90,289.54, 135,411.22 and 37,019.08 is: 55,519.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,289.54 : 135,411.22 = 37,019.08 : x
  2. Step 2: Convert to fraction form
    90,289.54/135,411.22 = 37,019.08/x
  3. Step 3: Cross multiply
    90,289.54x = 135,411.22 × 37,019.08
  4. Step 4: Simplify right side
    90,289.54x = 5,012,798,786.08
  5. Step 5: Solve for x
    x = 5,012,798,786.08/90,289.54
  6. Step 6: Final answer
    x = 55,519.15

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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.