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Finding the Fourth Proportional to 78,610.72, 108,481.44 and 44,619.52

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Solution

The fourth proportional to 78,610.72, 108,481.44 and 44,619.52 is: 61,574.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,610.72 : 108,481.44 = 44,619.52 : x
  2. Step 2: Convert to fraction form
    78,610.72/108,481.44 = 44,619.52/x
  3. Step 3: Cross multiply
    78,610.72x = 108,481.44 × 44,619.52
  4. Step 4: Simplify right side
    78,610.72x = 4,840,389,781.71
  5. Step 5: Solve for x
    x = 4,840,389,781.71/78,610.72
  6. Step 6: Final answer
    x = 61,574.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.