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Finding the Fourth Proportional to 51,878.67, 77,819.82 and 16,818.63

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Solution

The fourth proportional to 51,878.67, 77,819.82 and 16,818.63 is: 25,228.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,878.67 : 77,819.82 = 16,818.63 : x
  2. Step 2: Convert to fraction form
    51,878.67/77,819.82 = 16,818.63/x
  3. Step 3: Cross multiply
    51,878.67x = 77,819.82 × 16,818.63
  4. Step 4: Simplify right side
    51,878.67x = 1,308,822,759.25
  5. Step 5: Solve for x
    x = 1,308,822,759.25/51,878.67
  6. Step 6: Final answer
    x = 25,228.53

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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.