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Finding the Fourth Proportional to 70,786.64, 97,687.01 and 38,955.62

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Solution

The fourth proportional to 70,786.64, 97,687.01 and 38,955.62 is: 53,759.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,786.64 : 97,687.01 = 38,955.62 : x
  2. Step 2: Convert to fraction form
    70,786.64/97,687.01 = 38,955.62/x
  3. Step 3: Cross multiply
    70,786.64x = 97,687.01 × 38,955.62
  4. Step 4: Simplify right side
    70,786.64x = 3,805,457,357.28
  5. Step 5: Solve for x
    x = 3,805,457,357.28/70,786.64
  6. Step 6: Final answer
    x = 53,759.55

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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.