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Finding the Fourth Proportional to 65,770.32, 90,740.88 and 37,455.96

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Solution

The fourth proportional to 65,770.32, 90,740.88 and 37,455.96 is: 51,676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,770.32 : 90,740.88 = 37,455.96 : x
  2. Step 2: Convert to fraction form
    65,770.32/90,740.88 = 37,455.96/x
  3. Step 3: Cross multiply
    65,770.32x = 90,740.88 × 37,455.96
  4. Step 4: Simplify right side
    65,770.32x = 3,398,786,771.64
  5. Step 5: Solve for x
    x = 3,398,786,771.64/65,770.32
  6. Step 6: Final answer
    x = 51,676.60

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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.