Home / 45,420.43-68,130.67-20,455.83

Finding the Fourth Proportional to 45,420.43, 68,130.67 and 20,455.83

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Solution

The fourth proportional to 45,420.43, 68,130.67 and 20,455.83 is: 30,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,420.43 : 68,130.67 = 20,455.83 : x
  2. Step 2: Convert to fraction form
    45,420.43/68,130.67 = 20,455.83/x
  3. Step 3: Cross multiply
    45,420.43x = 68,130.67 × 20,455.83
  4. Step 4: Simplify right side
    45,420.43x = 1,393,669,403.31
  5. Step 5: Solve for x
    x = 1,393,669,403.31/45,420.43
  6. Step 6: Final answer
    x = 30,683.76

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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.