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Finding the Fourth Proportional to 91,873.56, 126,783.90 and 51,587.64

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Solution

The fourth proportional to 91,873.56, 126,783.90 and 51,587.64 is: 71,190.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,873.56 : 126,783.90 = 51,587.64 : x
  2. Step 2: Convert to fraction form
    91,873.56/126,783.90 = 51,587.64/x
  3. Step 3: Cross multiply
    91,873.56x = 126,783.90 × 51,587.64
  4. Step 4: Simplify right side
    91,873.56x = 6,540,482,191.00
  5. Step 5: Solve for x
    x = 6,540,482,191.00/91,873.56
  6. Step 6: Final answer
    x = 71,190.04

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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.