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Finding the Fourth Proportional to 45,499.80, 68,259.30 and 14,338.20

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Solution

The fourth proportional to 45,499.80, 68,259.30 and 14,338.20 is: 21,510.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,499.80 : 68,259.30 = 14,338.20 : x
  2. Step 2: Convert to fraction form
    45,499.80/68,259.30 = 14,338.20/x
  3. Step 3: Cross multiply
    45,499.80x = 68,259.30 × 14,338.20
  4. Step 4: Simplify right side
    45,499.80x = 978,715,495.26
  5. Step 5: Solve for x
    x = 978,715,495.26/45,499.80
  6. Step 6: Final answer
    x = 21,510.33

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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.