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Finding the Fourth Proportional to 91,396.96, 126,129.48 and 55,588.48

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Solution

The fourth proportional to 91,396.96, 126,129.48 and 55,588.48 is: 76,713.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,396.96 : 126,129.48 = 55,588.48 : x
  2. Step 2: Convert to fraction form
    91,396.96/126,129.48 = 55,588.48/x
  3. Step 3: Cross multiply
    91,396.96x = 126,129.48 × 55,588.48
  4. Step 4: Simplify right side
    91,396.96x = 7,011,346,076.39
  5. Step 5: Solve for x
    x = 7,011,346,076.39/91,396.96
  6. Step 6: Final answer
    x = 76,713.12

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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.