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Finding the Fourth Proportional to 72,327.82, 108,490.70 and 70,540.96

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Solution

The fourth proportional to 72,327.82, 108,490.70 and 70,540.96 is: 105,810.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,327.82 : 108,490.70 = 70,540.96 : x
  2. Step 2: Convert to fraction form
    72,327.82/108,490.70 = 70,540.96/x
  3. Step 3: Cross multiply
    72,327.82x = 108,490.70 × 70,540.96
  4. Step 4: Simplify right side
    72,327.82x = 7,653,038,129.07
  5. Step 5: Solve for x
    x = 7,653,038,129.07/72,327.82
  6. Step 6: Final answer
    x = 105,810.44

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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.