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Finding the Fourth Proportional to 91,037.64, 136,556.46 and 28,713

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Solution

The fourth proportional to 91,037.64, 136,556.46 and 28,713 is: 43,069.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,037.64 : 136,556.46 = 28,713 : x
  2. Step 2: Convert to fraction form
    91,037.64/136,556.46 = 28,713/x
  3. Step 3: Cross multiply
    91,037.64x = 136,556.46 × 28,713
  4. Step 4: Simplify right side
    91,037.64x = 3,920,945,635.98
  5. Step 5: Solve for x
    x = 3,920,945,635.98/91,037.64
  6. Step 6: Final answer
    x = 43,069.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.