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Finding the Fourth Proportional to 70,594.08, 105,890.40 and 18,003

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Solution

The fourth proportional to 70,594.08, 105,890.40 and 18,003 is: 27,004.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,594.08 : 105,890.40 = 18,003 : x
  2. Step 2: Convert to fraction form
    70,594.08/105,890.40 = 18,003/x
  3. Step 3: Cross multiply
    70,594.08x = 105,890.40 × 18,003
  4. Step 4: Simplify right side
    70,594.08x = 1,906,344,871.20
  5. Step 5: Solve for x
    x = 1,906,344,871.20/70,594.08
  6. Step 6: Final answer
    x = 27,004.32

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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.