Home / 51,865.60-77,836.80-20,723.20

Finding the Fourth Proportional to 51,865.60, 77,836.80 and 20,723.20

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Solution

The fourth proportional to 51,865.60, 77,836.80 and 20,723.20 is: 31,100.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,865.60 : 77,836.80 = 20,723.20 : x
  2. Step 2: Convert to fraction form
    51,865.60/77,836.80 = 20,723.20/x
  3. Step 3: Cross multiply
    51,865.60x = 77,836.80 × 20,723.20
  4. Step 4: Simplify right side
    51,865.60x = 1,613,027,573.76
  5. Step 5: Solve for x
    x = 1,613,027,573.76/51,865.60
  6. Step 6: Final answer
    x = 31,100.14

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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.