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Finding the Fourth Proportional to 45,645.57, 68,468.36 and 17,187.86

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Solution

The fourth proportional to 45,645.57, 68,468.36 and 17,187.86 is: 25,781.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,645.57 : 68,468.36 = 17,187.86 : x
  2. Step 2: Convert to fraction form
    45,645.57/68,468.36 = 17,187.86/x
  3. Step 3: Cross multiply
    45,645.57x = 68,468.36 × 17,187.86
  4. Step 4: Simplify right side
    45,645.57x = 1,176,824,671.34
  5. Step 5: Solve for x
    x = 1,176,824,671.34/45,645.57
  6. Step 6: Final answer
    x = 25,781.79

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1.5x scale

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.