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Finding the Fourth Proportional to 65,694.84, 90,657.90 and 37,400.28

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Solution

The fourth proportional to 65,694.84, 90,657.90 and 37,400.28 is: 51,611.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,694.84 : 90,657.90 = 37,400.28 : x
  2. Step 2: Convert to fraction form
    65,694.84/90,657.90 = 37,400.28/x
  3. Step 3: Cross multiply
    65,694.84x = 90,657.90 × 37,400.28
  4. Step 4: Simplify right side
    65,694.84x = 3,390,630,844.21
  5. Step 5: Solve for x
    x = 3,390,630,844.21/65,694.84
  6. Step 6: Final answer
    x = 51,611.83

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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.