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Finding the Fourth Proportional to 51,279.40, 76,927.02 and 21,697.40

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Solution

The fourth proportional to 51,279.40, 76,927.02 and 21,697.40 is: 32,549.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,279.40 : 76,927.02 = 21,697.40 : x
  2. Step 2: Convert to fraction form
    51,279.40/76,927.02 = 21,697.40/x
  3. Step 3: Cross multiply
    51,279.40x = 76,927.02 × 21,697.40
  4. Step 4: Simplify right side
    51,279.40x = 1,669,116,323.75
  5. Step 5: Solve for x
    x = 1,669,116,323.75/51,279.40
  6. Step 6: Final answer
    x = 32,549.45

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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.