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Finding the Fourth Proportional to 65,694.90, 90,659.06 and 37,400.58

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Solution

The fourth proportional to 65,694.90, 90,659.06 and 37,400.58 is: 51,612.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,694.90 : 90,659.06 = 37,400.58 : x
  2. Step 2: Convert to fraction form
    65,694.90/90,659.06 = 37,400.58/x
  3. Step 3: Cross multiply
    65,694.90x = 90,659.06 × 37,400.58
  4. Step 4: Simplify right side
    65,694.90x = 3,390,701,239.25
  5. Step 5: Solve for x
    x = 3,390,701,239.25/65,694.90
  6. Step 6: Final answer
    x = 51,612.85

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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.