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Finding the Fourth Proportional to 76,389.91, 114,587.96 and 36,388.33

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Solution

The fourth proportional to 76,389.91, 114,587.96 and 36,388.33 is: 54,583.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,389.91 : 114,587.96 = 36,388.33 : x
  2. Step 2: Convert to fraction form
    76,389.91/114,587.96 = 36,388.33/x
  3. Step 3: Cross multiply
    76,389.91x = 114,587.96 × 36,388.33
  4. Step 4: Simplify right side
    76,389.91x = 4,169,664,502.51
  5. Step 5: Solve for x
    x = 4,169,664,502.51/76,389.91
  6. Step 6: Final answer
    x = 54,583.97

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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.