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Finding the Fourth Proportional to 91,870.52, 126,788.64 and 51,586.97

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Solution

The fourth proportional to 91,870.52, 126,788.64 and 51,586.97 is: 71,194.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,870.52 : 126,788.64 = 51,586.97 : x
  2. Step 2: Convert to fraction form
    91,870.52/126,788.64 = 51,586.97/x
  3. Step 3: Cross multiply
    91,870.52x = 126,788.64 × 51,586.97
  4. Step 4: Simplify right side
    91,870.52x = 6,540,641,768.02
  5. Step 5: Solve for x
    x = 6,540,641,768.02/91,870.52
  6. Step 6: Final answer
    x = 71,194.13

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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.