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Finding the Fourth Proportional to 90,169.66, 135,499.86 and 48,079.48

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Solution

The fourth proportional to 90,169.66, 135,499.86 and 48,079.48 is: 72,250.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,169.66 : 135,499.86 = 48,079.48 : x
  2. Step 2: Convert to fraction form
    90,169.66/135,499.86 = 48,079.48/x
  3. Step 3: Cross multiply
    90,169.66x = 135,499.86 × 48,079.48
  4. Step 4: Simplify right side
    90,169.66x = 6,514,762,808.87
  5. Step 5: Solve for x
    x = 6,514,762,808.87/90,169.66
  6. Step 6: Final answer
    x = 72,250.05

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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.