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Finding the Fourth Proportional to 50,781.77, 70,078.65 and 28,425.77

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Solution

The fourth proportional to 50,781.77, 70,078.65 and 28,425.77 is: 39,227.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,781.77 : 70,078.65 = 28,425.77 : x
  2. Step 2: Convert to fraction form
    50,781.77/70,078.65 = 28,425.77/x
  3. Step 3: Cross multiply
    50,781.77x = 70,078.65 × 28,425.77
  4. Step 4: Simplify right side
    50,781.77x = 1,992,039,236.42
  5. Step 5: Solve for x
    x = 1,992,039,236.42/50,781.77
  6. Step 6: Final answer
    x = 39,227.45

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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.