Home / 90,591.72-135,756.30-51,064.74

Finding the Fourth Proportional to 90,591.72, 135,756.30 and 51,064.74

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Solution

The fourth proportional to 90,591.72, 135,756.30 and 51,064.74 is: 76,523.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,591.72 : 135,756.30 = 51,064.74 : x
  2. Step 2: Convert to fraction form
    90,591.72/135,756.30 = 51,064.74/x
  3. Step 3: Cross multiply
    90,591.72x = 135,756.30 × 51,064.74
  4. Step 4: Simplify right side
    90,591.72x = 6,932,360,162.86
  5. Step 5: Solve for x
    x = 6,932,360,162.86/90,591.72
  6. Step 6: Final answer
    x = 76,523.11

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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.