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Finding the Fourth Proportional to 90,423.68, 135,652.52 and 36,392.49

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Solution

The fourth proportional to 90,423.68, 135,652.52 and 36,392.49 is: 54,595.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,423.68 : 135,652.52 = 36,392.49 : x
  2. Step 2: Convert to fraction form
    90,423.68/135,652.52 = 36,392.49/x
  3. Step 3: Cross multiply
    90,423.68x = 135,652.52 × 36,392.49
  4. Step 4: Simplify right side
    90,423.68x = 4,936,733,068.56
  5. Step 5: Solve for x
    x = 4,936,733,068.56/90,423.68
  6. Step 6: Final answer
    x = 54,595.58

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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.