Home / 52,145.72-78,199.50-18,857.80

Finding the Fourth Proportional to 52,145.72, 78,199.50 and 18,857.80

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Solution

The fourth proportional to 52,145.72, 78,199.50 and 18,857.80 is: 28,279.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,145.72 : 78,199.50 = 18,857.80 : x
  2. Step 2: Convert to fraction form
    52,145.72/78,199.50 = 18,857.80/x
  3. Step 3: Cross multiply
    52,145.72x = 78,199.50 × 18,857.80
  4. Step 4: Simplify right side
    52,145.72x = 1,474,670,531.10
  5. Step 5: Solve for x
    x = 1,474,670,531.10/52,145.72
  6. Step 6: Final answer
    x = 28,279.80

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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.