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Finding the Fourth Proportional to 38,623.30, 57,978.15 and 36,085.30

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Solution

The fourth proportional to 38,623.30, 57,978.15 and 36,085.30 is: 54,168.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,623.30 : 57,978.15 = 36,085.30 : x
  2. Step 2: Convert to fraction form
    38,623.30/57,978.15 = 36,085.30/x
  3. Step 3: Cross multiply
    38,623.30x = 57,978.15 × 36,085.30
  4. Step 4: Simplify right side
    38,623.30x = 2,092,158,936.20
  5. Step 5: Solve for x
    x = 2,092,158,936.20/38,623.30
  6. Step 6: Final answer
    x = 54,168.31

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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.