Home / 45,399.54-68,116.32-20,432.10

Finding the Fourth Proportional to 45,399.54, 68,116.32 and 20,432.10

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Solution

The fourth proportional to 45,399.54, 68,116.32 and 20,432.10 is: 30,655.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,399.54 : 68,116.32 = 20,432.10 : x
  2. Step 2: Convert to fraction form
    45,399.54/68,116.32 = 20,432.10/x
  3. Step 3: Cross multiply
    45,399.54x = 68,116.32 × 20,432.10
  4. Step 4: Simplify right side
    45,399.54x = 1,391,759,461.87
  5. Step 5: Solve for x
    x = 1,391,759,461.87/45,399.54
  6. Step 6: Final answer
    x = 30,655.81

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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.