Home / 45,378.91-68,071.61-12,098.80

Finding the Fourth Proportional to 45,378.91, 68,071.61 and 12,098.80

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Solution

The fourth proportional to 45,378.91, 68,071.61 and 12,098.80 is: 18,149.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,378.91 : 68,071.61 = 12,098.80 : x
  2. Step 2: Convert to fraction form
    45,378.91/68,071.61 = 12,098.80/x
  3. Step 3: Cross multiply
    45,378.91x = 68,071.61 × 12,098.80
  4. Step 4: Simplify right side
    45,378.91x = 823,584,795.07
  5. Step 5: Solve for x
    x = 823,584,795.07/45,378.91
  6. Step 6: Final answer
    x = 18,149.07

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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.