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Finding the Fourth Proportional to 100,018.59, 149,924.21 and 47,388.03

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Solution

The fourth proportional to 100,018.59, 149,924.21 and 47,388.03 is: 71,032.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,018.59 : 149,924.21 = 47,388.03 : x
  2. Step 2: Convert to fraction form
    100,018.59/149,924.21 = 47,388.03/x
  3. Step 3: Cross multiply
    100,018.59x = 149,924.21 × 47,388.03
  4. Step 4: Simplify right side
    100,018.59x = 7,104,612,724.27
  5. Step 5: Solve for x
    x = 7,104,612,724.27/100,018.59
  6. Step 6: Final answer
    x = 71,032.92

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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.