Home / 45,456.60-68,136.30-20,492.40

Finding the Fourth Proportional to 45,456.60, 68,136.30 and 20,492.40

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Solution

The fourth proportional to 45,456.60, 68,136.30 and 20,492.40 is: 30,716.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,456.60 : 68,136.30 = 20,492.40 : x
  2. Step 2: Convert to fraction form
    45,456.60/68,136.30 = 20,492.40/x
  3. Step 3: Cross multiply
    45,456.60x = 68,136.30 × 20,492.40
  4. Step 4: Simplify right side
    45,456.60x = 1,396,276,314.12
  5. Step 5: Solve for x
    x = 1,396,276,314.12/45,456.60
  6. Step 6: Final answer
    x = 30,716.69

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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.