Home / 45,285.12-67,929.30-14,122.80

Finding the Fourth Proportional to 45,285.12, 67,929.30 and 14,122.80

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Solution

The fourth proportional to 45,285.12, 67,929.30 and 14,122.80 is: 21,184.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,285.12 : 67,929.30 = 14,122.80 : x
  2. Step 2: Convert to fraction form
    45,285.12/67,929.30 = 14,122.80/x
  3. Step 3: Cross multiply
    45,285.12x = 67,929.30 × 14,122.80
  4. Step 4: Simplify right side
    45,285.12x = 959,351,918.04
  5. Step 5: Solve for x
    x = 959,351,918.04/45,285.12
  6. Step 6: Final answer
    x = 21,184.71

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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.