Home / 45,000.20-67,500.30-18,723.80

Finding the Fourth Proportional to 45,000.20, 67,500.30 and 18,723.80

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Solution

The fourth proportional to 45,000.20, 67,500.30 and 18,723.80 is: 28,085.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,000.20 : 67,500.30 = 18,723.80 : x
  2. Step 2: Convert to fraction form
    45,000.20/67,500.30 = 18,723.80/x
  3. Step 3: Cross multiply
    45,000.20x = 67,500.30 × 18,723.80
  4. Step 4: Simplify right side
    45,000.20x = 1,263,862,117.14
  5. Step 5: Solve for x
    x = 1,263,862,117.14/45,000.20
  6. Step 6: Final answer
    x = 28,085.70

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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.