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Finding the Fourth Proportional to 91,758.94, 126,554.30 and 75,815.71

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Solution

The fourth proportional to 91,758.94, 126,554.30 and 75,815.71 is: 104,565.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,758.94 : 126,554.30 = 75,815.71 : x
  2. Step 2: Convert to fraction form
    91,758.94/126,554.30 = 75,815.71/x
  3. Step 3: Cross multiply
    91,758.94x = 126,554.30 × 75,815.71
  4. Step 4: Simplify right side
    91,758.94x = 9,594,803,728.97
  5. Step 5: Solve for x
    x = 9,594,803,728.97/91,758.94
  6. Step 6: Final answer
    x = 104,565.33

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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.