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Finding the Fourth Proportional to 65,342.90, 90,167.78 and 36,658.58

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Solution

The fourth proportional to 65,342.90, 90,167.78 and 36,658.58 is: 50,585.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,342.90 : 90,167.78 = 36,658.58 : x
  2. Step 2: Convert to fraction form
    65,342.90/90,167.78 = 36,658.58/x
  3. Step 3: Cross multiply
    65,342.90x = 90,167.78 × 36,658.58
  4. Step 4: Simplify right side
    65,342.90x = 3,305,422,417.36
  5. Step 5: Solve for x
    x = 3,305,422,417.36/65,342.90
  6. Step 6: Final answer
    x = 50,585.79

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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.