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Finding the Fourth Proportional to 91,662.81, 126,494.28 and 51,376.58

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Solution

The fourth proportional to 91,662.81, 126,494.28 and 51,376.58 is: 70,899.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,662.81 : 126,494.28 = 51,376.58 : x
  2. Step 2: Convert to fraction form
    91,662.81/126,494.28 = 51,376.58/x
  3. Step 3: Cross multiply
    91,662.81x = 126,494.28 × 51,376.58
  4. Step 4: Simplify right side
    91,662.81x = 6,498,842,863.49
  5. Step 5: Solve for x
    x = 6,498,842,863.49/91,662.81
  6. Step 6: Final answer
    x = 70,899.45

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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.