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Finding the Fourth Proportional to 51,324.88, 76,980.92 and 14,391.76

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Solution

The fourth proportional to 51,324.88, 76,980.92 and 14,391.76 is: 21,585.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,324.88 : 76,980.92 = 14,391.76 : x
  2. Step 2: Convert to fraction form
    51,324.88/76,980.92 = 14,391.76/x
  3. Step 3: Cross multiply
    51,324.88x = 76,980.92 × 14,391.76
  4. Step 4: Simplify right side
    51,324.88x = 1,107,890,925.22
  5. Step 5: Solve for x
    x = 1,107,890,925.22/51,324.88
  6. Step 6: Final answer
    x = 21,585.85

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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.