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Finding the Fourth Proportional to 90,604.32, 135,935.64 and 37,999.68

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Solution

The fourth proportional to 90,604.32, 135,935.64 and 37,999.68 is: 57,011.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,604.32 : 135,935.64 = 37,999.68 : x
  2. Step 2: Convert to fraction form
    90,604.32/135,935.64 = 37,999.68/x
  3. Step 3: Cross multiply
    90,604.32x = 135,935.64 × 37,999.68
  4. Step 4: Simplify right side
    90,604.32x = 5,165,510,820.60
  5. Step 5: Solve for x
    x = 5,165,510,820.60/90,604.32
  6. Step 6: Final answer
    x = 57,011.75

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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.