Home / 45,000.20-67,500.30-42,813.20

Finding the Fourth Proportional to 45,000.20, 67,500.30 and 42,813.20

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Solution

The fourth proportional to 45,000.20, 67,500.30 and 42,813.20 is: 64,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,000.20 : 67,500.30 = 42,813.20 : x
  2. Step 2: Convert to fraction form
    45,000.20/67,500.30 = 42,813.20/x
  3. Step 3: Cross multiply
    45,000.20x = 67,500.30 × 42,813.20
  4. Step 4: Simplify right side
    45,000.20x = 2,889,903,843.96
  5. Step 5: Solve for x
    x = 2,889,903,843.96/45,000.20
  6. Step 6: Final answer
    x = 64,219.80

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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.