Home / 51,400.98-77,112-21,818.70

Finding the Fourth Proportional to 51,400.98, 77,112 and 21,818.70

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Solution

The fourth proportional to 51,400.98, 77,112 and 21,818.70 is: 32,732.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,400.98 : 77,112 = 21,818.70 : x
  2. Step 2: Convert to fraction form
    51,400.98/77,112 = 21,818.70/x
  3. Step 3: Cross multiply
    51,400.98x = 77,112 × 21,818.70
  4. Step 4: Simplify right side
    51,400.98x = 1,682,483,594.40
  5. Step 5: Solve for x
    x = 1,682,483,594.40/51,400.98
  6. Step 6: Final answer
    x = 32,732.52

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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.