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Finding the Fourth Proportional to 86,590.82, 119,036.62 and 74,446.57

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Solution

The fourth proportional to 86,590.82, 119,036.62 and 74,446.57 is: 102,341.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,590.82 : 119,036.62 = 74,446.57 : x
  2. Step 2: Convert to fraction form
    86,590.82/119,036.62 = 74,446.57/x
  3. Step 3: Cross multiply
    86,590.82x = 119,036.62 × 74,446.57
  4. Step 4: Simplify right side
    86,590.82x = 8,861,868,063.39
  5. Step 5: Solve for x
    x = 8,861,868,063.39/86,590.82
  6. Step 6: Final answer
    x = 102,341.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.