Home / 77,128.28-115,703.39-23,824.78

Finding the Fourth Proportional to 77,128.28, 115,703.39 and 23,824.78

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Solution

The fourth proportional to 77,128.28, 115,703.39 and 23,824.78 is: 35,740.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,128.28 : 115,703.39 = 23,824.78 : x
  2. Step 2: Convert to fraction form
    77,128.28/115,703.39 = 23,824.78/x
  3. Step 3: Cross multiply
    77,128.28x = 115,703.39 × 23,824.78
  4. Step 4: Simplify right side
    77,128.28x = 2,756,608,099.12
  5. Step 5: Solve for x
    x = 2,756,608,099.12/77,128.28
  6. Step 6: Final answer
    x = 35,740.56

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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.