Home / 51,819.82-77,734.59-20,657.50

Finding the Fourth Proportional to 51,819.82, 77,734.59 and 20,657.50

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Solution

The fourth proportional to 51,819.82, 77,734.59 and 20,657.50 is: 30,988.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,819.82 : 77,734.59 = 20,657.50 : x
  2. Step 2: Convert to fraction form
    51,819.82/77,734.59 = 20,657.50/x
  3. Step 3: Cross multiply
    51,819.82x = 77,734.59 × 20,657.50
  4. Step 4: Simplify right side
    51,819.82x = 1,605,802,292.93
  5. Step 5: Solve for x
    x = 1,605,802,292.93/51,819.82
  6. Step 6: Final answer
    x = 30,988.19

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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.