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Finding the Fourth Proportional to 91,449.42, 126,203.34 and 51,164.88

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Solution

The fourth proportional to 91,449.42, 126,203.34 and 51,164.88 is: 70,609.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,449.42 : 126,203.34 = 51,164.88 : x
  2. Step 2: Convert to fraction form
    91,449.42/126,203.34 = 51,164.88/x
  3. Step 3: Cross multiply
    91,449.42x = 126,203.34 × 51,164.88
  4. Step 4: Simplify right side
    91,449.42x = 6,457,178,746.70
  5. Step 5: Solve for x
    x = 6,457,178,746.70/91,449.42
  6. Step 6: Final answer
    x = 70,609.29

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1.5x scale

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.