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Finding the Fourth Proportional to 91,452.81, 126,209.80 and 51,164.18

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Solution

The fourth proportional to 91,452.81, 126,209.80 and 51,164.18 is: 70,609.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,452.81 : 126,209.80 = 51,164.18 : x
  2. Step 2: Convert to fraction form
    91,452.81/126,209.80 = 51,164.18/x
  3. Step 3: Cross multiply
    91,452.81x = 126,209.80 × 51,164.18
  4. Step 4: Simplify right side
    91,452.81x = 6,457,420,924.96
  5. Step 5: Solve for x
    x = 6,457,420,924.96/91,452.81
  6. Step 6: Final answer
    x = 70,609.32

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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.