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Finding the Fourth Proportional to 45,374.60, 68,061.90 and 14,205.80

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Solution

The fourth proportional to 45,374.60, 68,061.90 and 14,205.80 is: 21,308.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,374.60 : 68,061.90 = 14,205.80 : x
  2. Step 2: Convert to fraction form
    45,374.60/68,061.90 = 14,205.80/x
  3. Step 3: Cross multiply
    45,374.60x = 68,061.90 × 14,205.80
  4. Step 4: Simplify right side
    45,374.60x = 966,873,739.02
  5. Step 5: Solve for x
    x = 966,873,739.02/45,374.60
  6. Step 6: Final answer
    x = 21,308.70

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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.