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Finding the Fourth Proportional to 65,664.54, 90,654.39 and 43,373.34

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Solution

The fourth proportional to 65,664.54, 90,654.39 and 43,373.34 is: 59,879.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,664.54 : 90,654.39 = 43,373.34 : x
  2. Step 2: Convert to fraction form
    65,664.54/90,654.39 = 43,373.34/x
  3. Step 3: Cross multiply
    65,664.54x = 90,654.39 × 43,373.34
  4. Step 4: Simplify right side
    65,664.54x = 3,931,983,679.96
  5. Step 5: Solve for x
    x = 3,931,983,679.96/65,664.54
  6. Step 6: Final answer
    x = 59,879.86

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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.