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Finding the Fourth Proportional to 72,018.58, 107,966.87 and 29,872.36

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Solution

The fourth proportional to 72,018.58, 107,966.87 and 29,872.36 is: 44,783.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,018.58 : 107,966.87 = 29,872.36 : x
  2. Step 2: Convert to fraction form
    72,018.58/107,966.87 = 29,872.36/x
  3. Step 3: Cross multiply
    72,018.58x = 107,966.87 × 29,872.36
  4. Step 4: Simplify right side
    72,018.58x = 3,225,224,789.43
  5. Step 5: Solve for x
    x = 3,225,224,789.43/72,018.58
  6. Step 6: Final answer
    x = 44,783.23

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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.