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Finding the Fourth Proportional to 45,357.66, 68,043.21 and 14,188.86

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Solution

The fourth proportional to 45,357.66, 68,043.21 and 14,188.86 is: 21,285.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,357.66 : 68,043.21 = 14,188.86 : x
  2. Step 2: Convert to fraction form
    45,357.66/68,043.21 = 14,188.86/x
  3. Step 3: Cross multiply
    45,357.66x = 68,043.21 × 14,188.86
  4. Step 4: Simplify right side
    45,357.66x = 965,455,580.64
  5. Step 5: Solve for x
    x = 965,455,580.64/45,357.66
  6. Step 6: Final answer
    x = 21,285.39

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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.