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Finding the Fourth Proportional to 53,019.82, 79,356.65 and 38,976.13

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Solution

The fourth proportional to 53,019.82, 79,356.65 and 38,976.13 is: 58,336.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,019.82 : 79,356.65 = 38,976.13 : x
  2. Step 2: Convert to fraction form
    53,019.82/79,356.65 = 38,976.13/x
  3. Step 3: Cross multiply
    53,019.82x = 79,356.65 × 38,976.13
  4. Step 4: Simplify right side
    53,019.82x = 3,093,014,911.88
  5. Step 5: Solve for x
    x = 3,093,014,911.88/53,019.82
  6. Step 6: Final answer
    x = 58,336.96

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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.