Home / 51,416.80-77,144.40-20,273.76

Finding the Fourth Proportional to 51,416.80, 77,144.40 and 20,273.76

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Solution

The fourth proportional to 51,416.80, 77,144.40 and 20,273.76 is: 30,418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,416.80 : 77,144.40 = 20,273.76 : x
  2. Step 2: Convert to fraction form
    51,416.80/77,144.40 = 20,273.76/x
  3. Step 3: Cross multiply
    51,416.80x = 77,144.40 × 20,273.76
  4. Step 4: Simplify right side
    51,416.80x = 1,564,007,050.94
  5. Step 5: Solve for x
    x = 1,564,007,050.94/51,416.80
  6. Step 6: Final answer
    x = 30,418.21

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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.