Home / 51,387.21-77,109.98-20,244.33

Finding the Fourth Proportional to 51,387.21, 77,109.98 and 20,244.33

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Solution

The fourth proportional to 51,387.21, 77,109.98 and 20,244.33 is: 30,377.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,387.21 : 77,109.98 = 20,244.33 : x
  2. Step 2: Convert to fraction form
    51,387.21/77,109.98 = 20,244.33/x
  3. Step 3: Cross multiply
    51,387.21x = 77,109.98 × 20,244.33
  4. Step 4: Simplify right side
    51,387.21x = 1,561,039,780.19
  5. Step 5: Solve for x
    x = 1,561,039,780.19/51,387.21
  6. Step 6: Final answer
    x = 30,377.98

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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.