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Finding the Fourth Proportional to 75,963.62, 104,740.86 and 51,778.90

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Solution

The fourth proportional to 75,963.62, 104,740.86 and 51,778.90 is: 71,394.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,963.62 : 104,740.86 = 51,778.90 : x
  2. Step 2: Convert to fraction form
    75,963.62/104,740.86 = 51,778.90/x
  3. Step 3: Cross multiply
    75,963.62x = 104,740.86 × 51,778.90
  4. Step 4: Simplify right side
    75,963.62x = 5,423,365,733.26
  5. Step 5: Solve for x
    x = 5,423,365,733.26/75,963.62
  6. Step 6: Final answer
    x = 71,394.26

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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.