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Finding the Fourth Proportional to 45,808.80, 68,723.01 and 14,218.20

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Solution

The fourth proportional to 45,808.80, 68,723.01 and 14,218.20 is: 21,330.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,808.80 : 68,723.01 = 14,218.20 : x
  2. Step 2: Convert to fraction form
    45,808.80/68,723.01 = 14,218.20/x
  3. Step 3: Cross multiply
    45,808.80x = 68,723.01 × 14,218.20
  4. Step 4: Simplify right side
    45,808.80x = 977,117,500.78
  5. Step 5: Solve for x
    x = 977,117,500.78/45,808.80
  6. Step 6: Final answer
    x = 21,330.34

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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.