Home / 51,853.42-77,810.30-21,865.78

Finding the Fourth Proportional to 51,853.42, 77,810.30 and 21,865.78

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Solution

The fourth proportional to 51,853.42, 77,810.30 and 21,865.78 is: 32,811.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,853.42 : 77,810.30 = 21,865.78 : x
  2. Step 2: Convert to fraction form
    51,853.42/77,810.30 = 21,865.78/x
  3. Step 3: Cross multiply
    51,853.42x = 77,810.30 × 21,865.78
  4. Step 4: Simplify right side
    51,853.42x = 1,701,382,901.53
  5. Step 5: Solve for x
    x = 1,701,382,901.53/51,853.42
  6. Step 6: Final answer
    x = 32,811.39

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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.