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Finding the Fourth Proportional to 103,662.82, 143,052.96 and 58,340.80

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Solution

The fourth proportional to 103,662.82, 143,052.96 and 58,340.80 is: 80,509.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,662.82 : 143,052.96 = 58,340.80 : x
  2. Step 2: Convert to fraction form
    103,662.82/143,052.96 = 58,340.80/x
  3. Step 3: Cross multiply
    103,662.82x = 143,052.96 × 58,340.80
  4. Step 4: Simplify right side
    103,662.82x = 8,345,824,128.77
  5. Step 5: Solve for x
    x = 8,345,824,128.77/103,662.82
  6. Step 6: Final answer
    x = 80,509.33

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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.