Home / 45,403.92-68,105.76-21,639.43

Finding the Fourth Proportional to 45,403.92, 68,105.76 and 21,639.43

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Solution

The fourth proportional to 45,403.92, 68,105.76 and 21,639.43 is: 32,459.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,403.92 : 68,105.76 = 21,639.43 : x
  2. Step 2: Convert to fraction form
    45,403.92/68,105.76 = 21,639.43/x
  3. Step 3: Cross multiply
    45,403.92x = 68,105.76 × 21,639.43
  4. Step 4: Simplify right side
    45,403.92x = 1,473,769,655.85
  5. Step 5: Solve for x
    x = 1,473,769,655.85/45,403.92
  6. Step 6: Final answer
    x = 32,459.08

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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.