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Finding the Fourth Proportional to 90,590.72, 135,754.82 and 51,063.72

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Solution

The fourth proportional to 90,590.72, 135,754.82 and 51,063.72 is: 76,521.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,590.72 : 135,754.82 = 51,063.72 : x
  2. Step 2: Convert to fraction form
    90,590.72/135,754.82 = 51,063.72/x
  3. Step 3: Cross multiply
    90,590.72x = 135,754.82 × 51,063.72
  4. Step 4: Simplify right side
    90,590.72x = 6,932,146,117.13
  5. Step 5: Solve for x
    x = 6,932,146,117.13/90,590.72
  6. Step 6: Final answer
    x = 76,521.59

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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.