Home / 52,000.20-78,000.30-18,757.80

Finding the Fourth Proportional to 52,000.20, 78,000.30 and 18,757.80

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Solution

The fourth proportional to 52,000.20, 78,000.30 and 18,757.80 is: 28,136.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,000.20 : 78,000.30 = 18,757.80 : x
  2. Step 2: Convert to fraction form
    52,000.20/78,000.30 = 18,757.80/x
  3. Step 3: Cross multiply
    52,000.20x = 78,000.30 × 18,757.80
  4. Step 4: Simplify right side
    52,000.20x = 1,463,114,027.34
  5. Step 5: Solve for x
    x = 1,463,114,027.34/52,000.20
  6. Step 6: Final answer
    x = 28,136.70

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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.