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Finding the Fourth Proportional to 91,251.46, 136,866.41 and 28,071.46

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Solution

The fourth proportional to 91,251.46, 136,866.41 and 28,071.46 is: 42,103.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,251.46 : 136,866.41 = 28,071.46 : x
  2. Step 2: Convert to fraction form
    91,251.46/136,866.41 = 28,071.46/x
  3. Step 3: Cross multiply
    91,251.46x = 136,866.41 × 28,071.46
  4. Step 4: Simplify right side
    91,251.46x = 3,842,040,089.65
  5. Step 5: Solve for x
    x = 3,842,040,089.65/91,251.46
  6. Step 6: Final answer
    x = 42,103.87

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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.