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Finding the Fourth Proportional to 50,781.58, 70,078.40 and 28,425.58

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Solution

The fourth proportional to 50,781.58, 70,078.40 and 28,425.58 is: 39,227.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,781.58 : 70,078.40 = 28,425.58 : x
  2. Step 2: Convert to fraction form
    50,781.58/70,078.40 = 28,425.58/x
  3. Step 3: Cross multiply
    50,781.58x = 70,078.40 × 28,425.58
  4. Step 4: Simplify right side
    50,781.58x = 1,992,018,954.74
  5. Step 5: Solve for x
    x = 1,992,018,954.74/50,781.58
  6. Step 6: Final answer
    x = 39,227.20

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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.