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Finding the Fourth Proportional to 65,486.64, 90,372.18 and 37,192.92

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Solution

The fourth proportional to 65,486.64, 90,372.18 and 37,192.92 is: 51,326.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,486.64 : 90,372.18 = 37,192.92 : x
  2. Step 2: Convert to fraction form
    65,486.64/90,372.18 = 37,192.92/x
  3. Step 3: Cross multiply
    65,486.64x = 90,372.18 × 37,192.92
  4. Step 4: Simplify right side
    65,486.64x = 3,361,205,260.97
  5. Step 5: Solve for x
    x = 3,361,205,260.97/65,486.64
  6. Step 6: Final answer
    x = 51,326.58

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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.