Home / 45,000.20-67,500.30-39,945.80

Finding the Fourth Proportional to 45,000.20, 67,500.30 and 39,945.80

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Solution

The fourth proportional to 45,000.20, 67,500.30 and 39,945.80 is: 59,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,000.20 : 67,500.30 = 39,945.80 : x
  2. Step 2: Convert to fraction form
    45,000.20/67,500.30 = 39,945.80/x
  3. Step 3: Cross multiply
    45,000.20x = 67,500.30 × 39,945.80
  4. Step 4: Simplify right side
    45,000.20x = 2,696,353,483.74
  5. Step 5: Solve for x
    x = 2,696,353,483.74/45,000.20
  6. Step 6: Final answer
    x = 59,918.70

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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.