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Finding the Fourth Proportional to 91,299.52, 125,986.20 and 51,011.20

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Solution

The fourth proportional to 91,299.52, 125,986.20 and 51,011.20 is: 70,391.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,299.52 : 125,986.20 = 51,011.20 : x
  2. Step 2: Convert to fraction form
    91,299.52/125,986.20 = 51,011.20/x
  3. Step 3: Cross multiply
    91,299.52x = 125,986.20 × 51,011.20
  4. Step 4: Simplify right side
    91,299.52x = 6,426,707,245.44
  5. Step 5: Solve for x
    x = 6,426,707,245.44/91,299.52
  6. Step 6: Final answer
    x = 70,391.47

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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.