Home / 48,128.80-72,193.20-20,423.20

Finding the Fourth Proportional to 48,128.80, 72,193.20 and 20,423.20

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Solution

The fourth proportional to 48,128.80, 72,193.20 and 20,423.20 is: 30,634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,128.80 : 72,193.20 = 20,423.20 : x
  2. Step 2: Convert to fraction form
    48,128.80/72,193.20 = 20,423.20/x
  3. Step 3: Cross multiply
    48,128.80x = 72,193.20 × 20,423.20
  4. Step 4: Simplify right side
    48,128.80x = 1,474,416,162.24
  5. Step 5: Solve for x
    x = 1,474,416,162.24/48,128.80
  6. Step 6: Final answer
    x = 30,634.80

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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.