Home / 45,138.92-67,709.96-21,434.28

Finding the Fourth Proportional to 45,138.92, 67,709.96 and 21,434.28

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Solution

The fourth proportional to 45,138.92, 67,709.96 and 21,434.28 is: 32,152.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,138.92 : 67,709.96 = 21,434.28 : x
  2. Step 2: Convert to fraction form
    45,138.92/67,709.96 = 21,434.28/x
  3. Step 3: Cross multiply
    45,138.92x = 67,709.96 × 21,434.28
  4. Step 4: Simplify right side
    45,138.92x = 1,451,314,241.43
  5. Step 5: Solve for x
    x = 1,451,314,241.43/45,138.92
  6. Step 6: Final answer
    x = 32,152.17

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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.