Home / 45,661.32-68,426.82-20,639.16

Finding the Fourth Proportional to 45,661.32, 68,426.82 and 20,639.16

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Solution

The fourth proportional to 45,661.32, 68,426.82 and 20,639.16 is: 30,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,661.32 : 68,426.82 = 20,639.16 : x
  2. Step 2: Convert to fraction form
    45,661.32/68,426.82 = 20,639.16/x
  3. Step 3: Cross multiply
    45,661.32x = 68,426.82 × 20,639.16
  4. Step 4: Simplify right side
    45,661.32x = 1,412,272,086.27
  5. Step 5: Solve for x
    x = 1,412,272,086.27/45,661.32
  6. Step 6: Final answer
    x = 30,929.29

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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.