Home / 51,874.13-77,830.80-20,306.75

Finding the Fourth Proportional to 51,874.13, 77,830.80 and 20,306.75

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Solution

The fourth proportional to 51,874.13, 77,830.80 and 20,306.75 is: 30,467.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,874.13 : 77,830.80 = 20,306.75 : x
  2. Step 2: Convert to fraction form
    51,874.13/77,830.80 = 20,306.75/x
  3. Step 3: Cross multiply
    51,874.13x = 77,830.80 × 20,306.75
  4. Step 4: Simplify right side
    51,874.13x = 1,580,490,597.90
  5. Step 5: Solve for x
    x = 1,580,490,597.90/51,874.13
  6. Step 6: Final answer
    x = 30,467.80

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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.