Home / 51,943.68-77,928.48-20,778.12

Finding the Fourth Proportional to 51,943.68, 77,928.48 and 20,778.12

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Solution

The fourth proportional to 51,943.68, 77,928.48 and 20,778.12 is: 31,172.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,943.68 : 77,928.48 = 20,778.12 : x
  2. Step 2: Convert to fraction form
    51,943.68/77,928.48 = 20,778.12/x
  3. Step 3: Cross multiply
    51,943.68x = 77,928.48 × 20,778.12
  4. Step 4: Simplify right side
    51,943.68x = 1,619,207,308.86
  5. Step 5: Solve for x
    x = 1,619,207,308.86/51,943.68
  6. Step 6: Final answer
    x = 31,172.36

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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.