Home / 75,290.93-103,920.39-51,132.78

Finding the Fourth Proportional to 75,290.93, 103,920.39 and 51,132.78

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Solution

The fourth proportional to 75,290.93, 103,920.39 and 51,132.78 is: 70,576.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,290.93 : 103,920.39 = 51,132.78 : x
  2. Step 2: Convert to fraction form
    75,290.93/103,920.39 = 51,132.78/x
  3. Step 3: Cross multiply
    75,290.93x = 103,920.39 × 51,132.78
  4. Step 4: Simplify right side
    75,290.93x = 5,313,738,729.33
  5. Step 5: Solve for x
    x = 5,313,738,729.33/75,290.93
  6. Step 6: Final answer
    x = 70,576.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.