Home / 50,781.48-70,078.05-28,120.38

Finding the Fourth Proportional to 50,781.48, 70,078.05 and 28,120.38

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Solution

The fourth proportional to 50,781.48, 70,078.05 and 28,120.38 is: 38,805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,781.48 : 70,078.05 = 28,120.38 : x
  2. Step 2: Convert to fraction form
    50,781.48/70,078.05 = 28,120.38/x
  3. Step 3: Cross multiply
    50,781.48x = 70,078.05 × 28,120.38
  4. Step 4: Simplify right side
    50,781.48x = 1,970,621,395.66
  5. Step 5: Solve for x
    x = 1,970,621,395.66/50,781.48
  6. Step 6: Final answer
    x = 38,805.91

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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.