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Finding the Fourth Proportional to 65,693.84, 90,660.48 and 37,405.52

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Solution

The fourth proportional to 65,693.84, 90,660.48 and 37,405.52 is: 51,621.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,693.84 : 90,660.48 = 37,405.52 : x
  2. Step 2: Convert to fraction form
    65,693.84/90,660.48 = 37,405.52/x
  3. Step 3: Cross multiply
    65,693.84x = 90,660.48 × 37,405.52
  4. Step 4: Simplify right side
    65,693.84x = 3,391,202,397.85
  5. Step 5: Solve for x
    x = 3,391,202,397.85/65,693.84
  6. Step 6: Final answer
    x = 51,621.31

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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.