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Finding the Fourth Proportional to 91,371.58, 126,131.64 and 55,573.09

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Solution

The fourth proportional to 91,371.58, 126,131.64 and 55,573.09 is: 76,714.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,371.58 : 126,131.64 = 55,573.09 : x
  2. Step 2: Convert to fraction form
    91,371.58/126,131.64 = 55,573.09/x
  3. Step 3: Cross multiply
    91,371.58x = 126,131.64 × 55,573.09
  4. Step 4: Simplify right side
    91,371.58x = 7,009,524,981.57
  5. Step 5: Solve for x
    x = 7,009,524,981.57/91,371.58
  6. Step 6: Final answer
    x = 76,714.50

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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.